Guinea-Bissau is a small country on the Atlantic coast of West Africa, bordered by Senegal to the north and Guinea to the east and south. Formerly known as Portuguese Guinea, it became independent from Portugal in 1974. Its geography is defined by a low coastal plain cut by many tidal rivers and estuaries, mangrove shorelines, a savanna zone in the east, and the Bijagós Archipelago offshore. These features shape where people live, how they make a living, and why the country's biodiversity is internationally significant.
The country's human geography is equally distinctive. Its population is around two million, and its ethnic and cultural mix reflects both African and Portuguese influences. Its economy depends heavily on agriculture, fishing and cashew exports, and it remains one of the poorest countries in the world. Its history, from the Mali-era trade networks and Portuguese slave-trading posts to the liberation war, repeated coups and civil conflict, has left a state whose institutions and infrastructure are still being rebuilt. Political change is ongoing, with a military-led transition since late 2025.
This entry follows the country from its physical setting to its present situation. It first covers location, terrain, rivers, climate, the Bijagós islands, natural resources and population. It then traces the territory's historical formation under Portuguese rule, the independence struggle and later instability. It closes with the economy, the country's vulnerability to climate change and sea-level rise, the limits of available data, and the current political transition.
Location and borders
Guinea-Bissau lies on the Atlantic seaboard of West Africa. Its land frontiers run along Senegal to the north and Guinea to the east and south, while the Atlantic Ocean forms the western limit It shares land borders with Senegal to the north and Guinea to the east and south; the Atlantic Ocean defines its western boundary.
The national territory is usually given as 36,125 km², a total that counts the Bijagós Archipelago offshore covering a total area of 36,125 km2. Reference works choose different yardsticks. One US-oriented profile places the country just below three times the area of Connecticut the country is a bit less than 3 times the size of the U.S. state of Connecticut., while another likens it to Maryland Area: (including Bijagos Archipelago) 36,125 sq. km., about the size of Maryland. The shoreline itself is roughly 300 km long It has about 300 kilometers (186 miles) of coastline along the Atlantic Ocean.. Adding the land frontiers, one profile arrives at a combined boundary length of 1,074 km with a total boundary length of 1,074 km (667 mi).
Land frontiers and their colonial origins
The frontier with Guinea is about 421 km long and begins at the Atlantic near the mouth of the Cajet (Inxanche) River, then runs north-east toward the Senegalese tripoint The border starts in the southwest at the Atlantic coast near the mouth the Cajet/Inxanche river, just north of Guinea's Tristao Island, and then proceeds overland in a north-easterly direction. Along the way, the line follows rivers, including the Ouale and the Corubal, which it traces in a curved path the border then follows the Ouale and Corubal River in a C-shape, before proceeding overland northwards up to the tripoint with Senegal.
These lines are rooted in the colonial period. Portuguese contact with the coast began in the mid-1400s, and the coastal area later known as Portuguese Guinea was only loosely defined Portugal began exploring the coastal areas of modern Guinea-Bissau in the mid-1400s. A Franco-Portuguese convention of 1886 delimited the land border between the two colonial territories, and it was the reach of that same text over the sea that later became contested The question arose over whether or not the 1886 Franco-Portuguese colonial Convention, which delimited their land border, also defined a maritime boundary between modern-day Guinea and Guinea-Bissau.
Maritime boundaries and the sea frontier
The dispute with Guinea was settled by arbitration. The tribunal concluded that the 1886 agreement had not fixed a sea boundary, so the arbitrators had to define one themselves On 14 February 1985, Guinea and Guinea-Bissau had their maritime boundary dispute resolved by arbitration. The Tribunal determined that the historic agreement did not delimit their maritime frontiers, and it therefore fell to the arbitrators to define the boundary.. The resulting line leaves the land boundary at the Cajet River, passes three specified points, and then continues on a fixed bearing out to the outer limit of the 200-nautical-mile exclusive economic zone (EEZ) The maritime border continues from the land boundary terminus in the thalweg of the Cajet River through three specified points before following the azimuth of 236° to the outer limit of Guinea's and Guinea-Bissau's 200 nautical mile exclusive economic zone jurisdiction.. A separate maritime delimitation case between Guinea-Bissau and Senegal appears in a list of 1991 cases Maritime Delimitation between Guinea-Bissau and Senegal (Guinea-Bissau v. Senegal).
The current national framework is Law No. 13/2013, which replaced an earlier 1985 act. It sets the straight baselines from which the territorial sea is measured and the widths and outer limits of each zone This Law, consisting of three Chapters and five Annexes, establishes the boundaries of the Maritime Zones under the sovereignty or jurisdiction of the Republic of Guinea-Bissau. It defines the system of straight baselines from which the width of the territorial sea is measured, as well as the widths and the outer limits of the zones. Within the EEZ, the state holds rights over fisheries and other marine resources, which is central to its economy. The coast also shapes trade and transport: The country's coastline is indented by the Geba River estuary and intersected by several major rivers (Geba, Cacheu, ... The capital, Bissau, sits near the Geba estuary Its capital Bissau is located on the coast, near the estuary of the Geba River.
Published figures for the EEZ depend on which boundary dataset is used, and those datasets are revised over time. One mapping listing draws on version 11 of a geodatabase Maritime Boundaries Geodatabase: Maritime Boundaries and Exclusive Economic Zones (200NM), version 11., while a gazetteer entry relies on a 2023 release Maritime Boundaries Geodatabase: Maritime Boundaries and Exclusive Economic Zones (200NM), version 12.
Relief: coastal plains and eastern savanna
Guinea-Bissau's surface is low and largely level. Reference data put the mean elevation at 70 m, with the lowest point at sea level on the Atlantic Ocean and the highest point at about 300 m in the east. Much of the land is only slightly above the tide line, and the country has no significant mountain ranges. Most of the western and central territory forms a coastal plain whose surface seldom rises far above the Atlantic shore, so small changes in water level can reach far inland.
The coastal zone is the most extensive part of the terrain. Mangrove swamps dominate the low coastal plain, giving way to a mosaic of forest and savanna toward the east. Remote-sensing work has counted about 1,203 km² of tidal flats, which places the country among those with the largest tidal-flat areas. Along the shoreline, marshland is the typical surface, and inland the lowlands stay low except in the northeast (the country is swampy at the coast and low-lying inland, except in the northeast).
Elevation rises only gradually toward the east. Between the coastal lowlands and the border with Guinea and Senegal, the land takes on the form of a shallow central plateau, which is called the Planalto de Gabú where it reaches the eastern frontier. The highest ground lies in this eastern zone. Sources differ on its exact height: one gives Dongol Ronde at 277 m, while another places the summit of Monte Torin at 262 m in the Gabú region, close to the southern border with Guinea. These differences are small, but they show that the highest elevations are modest by regional standards.
Vegetation and land use shift with this gradient. Savanna woodland takes over as one moves from the coast into the interior. In the west, the lowlands support rice cultivation and mangrove-lined creeks, while the drier east is open savanna used mainly for grazing and small-scale farming. The southeast of the Gabú region illustrates this pattern: its population is made up mostly of Fulani herders. The contrast between a wet, intensively cultivated coast and a drier, pastoral interior is one of the clearest divisions in the national landscape.
Soils follow the lay of the land and the water. In many villages a clear toposequence appears, with hydromorphic bolanha soils occurring alongside ferrallitic soils on the villages' upland. The bolanhas are the wet, low-lying rice fields, while the upland soils are used for cash crops such as cashew. Within the bolanhas, salinity and acidity vary. Fields created by clearing former mangroves are the most affected by salt, and there are acid sulfate soils inside the polders. Farmers have improved these soils over decades by continuous drainage during the rainy season. Drainage is also shaped by the river network. Estuaries near the coast branch out like a network of roots, and the rivers meander through the lowland plains to join the Atlantic. As they cross the plains, they carry water, nutrients and sediment from the land, which feeds the fields that lie along their banks.
The combination of flat terrain and tidal influence makes the country highly exposed to flooding. A study of climate vulnerability describes the country as flat, with a large meandering coastal area invaded by the tides, and it has a high ratio of shoreline to land area. The valleys flood often, especially during the rainy season, with damaging effects on infrastructure, agriculture and public health. Moderate flooding has a positive side: at non-devastating levels, the rains make the valleys good locations for farming, especially rice cultivation. The balance is fragile, because much of the agricultural land has been created by destroying mangroves, which act as a natural barrier between land and water. As a result, coastal areas have been eroding, a process expected to worsen as sea levels rise. Rain-fed wetland rice is also highly vulnerable to rainfall patterns, which means that both drought and flooding can affect production in the same region.
Rivers, estuaries and mangrove coasts
Principal rivers and tidal estuaries
Three rivers dominate the drainage: the Corubal, the Geba and the Cacheu. The Corubal, Geba, and Cacheu Rivers are some of the major waterways draining Guinea-Bissau. The Geba is the largest of the three in total course: it rises in the Fouta Djallon highlands of northern Guinea, passes through southern Senegal, and reaches the Atlantic in Guinea-Bissau, with a total length of about 550 km. The Corubal, a major tributary of the Geba River, runs for a short stretch along the Guinea border (for a short distance, it forms the international border between Guinea and Guinea-Bissau). The Cacheu, about 257 km long, is also known as the Farim along its upper course.
Along the coast, the rivers end in wide tidal estuaries. The coastline is about 350 km long and consists of an irregular mainland with numerous rias and the estuaries of the Cacheu and Geba rivers. A ria is a river valley that the sea has flooded after a rise in sea level, which explains why the lower valleys are so broad. The estuaries themselves are shaped by an intricate network of mangrove-fringed tidal channels. Tides are semidiurnal and are amplified as they move into the funnel-shaped inlets: mean spring tide ranges reach 2.8 m at Cacheu, 5.1 m at Bissau on the Geba estuary, and 6.4 m at Port Gole.
The reach of salt water is one of the country's defining hydrological features. Tidal influence is felt up to 150 km upstream on the Cacheu, although another source gives tidal waters reach as far as 100 km inland because of the flat terrain. The difference likely reflects different measurement points or methods, and neither figure has been reconciled in the sources consulted. The estuaries also move large volumes of material: they carry water, nutrients, but also sediments out from the land, and sediment plumes are visible as far as the Geba passes the capital.
Mangrove forests
Mangroves form the most distinctive coastal cover. Mangrove forests still line most of Guinea-Bissau's fringing shoreline along West Africa's Atlantic coast. They serve as a nursery for fish, store carbon, and their root systems help prevent coastal erosion while providing habitat, nurseries and feeding grounds for numerous fish and other organisms. Their stems and roots also buffer coasts from sea swells, storms and erosion. Protected stands include the Cacheu River Mangroves Natural Park, which has an area of 886 km² and is home to the largest mangrove forest in West Africa, according to one conservation report. Mangrove cover has nonetheless shrunk: the total area covered by mangroves has declined by 32% since 1940.
Mangroves also protect the people who depend on them. Mangroves shield villages from floods, improve fish stocks and protect vital rice fields. The estuarine nursery function supports shrimp and shellfish as well as finfish. Mangrove loss therefore has direct effects on the coastal fishery.
Seasonal flow, salinity and rice
River discharge follows the rainy season, although sources differ on its timing. One account gives a wet season typically from April to October and a dry season from November to March, while another puts the wet season from June to November. For the Geba, flow is higher during the rainy season (from June to October). The Corubal's recorded discharge also varies widely, from a minimum of 5.4 m³/s to a maximum of 1,600 m³/s at Saltinho.
In the dry season, the salt front advances upstream. Salt water intrudes into rice fields, and spring tides often lead to saltwater intrusion and a partial or total loss of rice production. Rainfall is needed to wash salt out of the soil: allowing the invasion of brackish water during the dry season requires high rainfalls for salt leaching. Because of this, dry season water supplies are largely sourced from groundwater, and salt water threatens those aquifers as well. Rice cultivation illustrates the adaptation to these conditions. Farmers slash the mangroves, build a main dike to prevent saltwater intrusion, and cultivate the resulting plots. Fields that are regularly flooded by tides are called tidal mangrove fields (bolanha de tarrafe in Kriol). Coastal farming communities favour these sites due to their high rice productivity compared with the uplands and inland swamp valleys.
Navigation and trade
The rivers have long served as transport corridors. The Geba, Corubal and Cacheu serve both as vital transportation routes and as the lifeblood of extensive rice cultivation in the surrounding wetlands. Their deep tidal reach gave boats access far inland, which is why the estuaries became points of contact with the outside world. Portuguese navigators reached the coast in the fifteenth century, and the rivers of Cacheu and Bissau soon became notorious hubs of the transatlantic slave trade. The rivers also marked political frontiers: the Corubal formed the border between Kaabu and the Imamate of Futa Jallon in the late 18th and early 19th centuries.
The Bijagós Archipelago
Islands and physical setting
The Bijagós Archipelago lies in the Atlantic a short distance off the coast, and its islands are usually counted as 88. Located 48km (30mi) off the Guinea-Bissau coast, the 12,950-sq-km (5,000-sq-mi) Bijagos archipelago encompasses 88 islands and islets. Its origin lies in the coastal lowlands: the islands sit in the estuary of the Corubal and Geba rivers, and the archipelago is described as the only active deltaic archipelago on the African Atlantic coast, characterized by vast intertidal plains. Most of its surface is sea. In the UNESCO nomination figures, the terrestrial area is about 136,974 hectares, while the marine area is about 910,979 hectares. Total Marine area 910,979.00 ha
Only a minority of the islands are permanently settled. Estimates range from 21 to 23 inhabited islands, and the figures differ by source. One account states that only 23 of which are inhabited. Others put the number at 21 inhabited by 30 thousand people. The uninhabited islands serve other purposes. Some of the uninhabited islands are used for seasonal agriculture and grazing, and some are set aside as sacred, accessible only to the initiated and ceremonies. Poilão is a sacred island where staying overnight [is] strictly forbidden.
The archipelago's habitats are varied. The islands contain a high degree of biodiversity, with mangrove forests, saltwater swamps and palm trees interspersed with zones of dry forest, coastal savanna and sand banks.
Biosphere reserve status and rationale
UNESCO recognised the archipelago as a biosphere reserve in 1996. Bolama-Bijagós Biosphere Reserve is an archipelago of 88 islands located on the coast of Guinea-Bissau in western Africa. The main justification concerns its wildlife in the mangroves and on the mudflats. One of the main reasons the archipelago received biosphere reserve status was the fact that the fauna in its mangroves and on its mudflats is so diverse. The site is also a key nesting ground for turtles. The archipelago has been recognised as the most important site in Africa for the green sea turtle (Chelonia mydas) to lay their eggs, with nearly 10,000 adult females. Each year it also hosts large numbers of birds. They also lie along the East Atlantic Flyway, welcoming a million migratory birds each year.
Protection has been extended through marine protected areas. The reserve includes three Marine Protected Areas (MPAs), and the largest, Orango Islands National Park, was created in 2000, and covers an area of 1,582 km². A UNESCO World Heritage listing has been pursued separately. An encyclopedic listing gives 2025 as the designation year for the site under the name "Coastal and Marine Ecosystems of the Bijagós Archipelago", but the earlier 2013 bid was rejected, and the country used the recommendations made by UNESCO in formulating its latest bid.
Island communities and livelihoods
The main population is the Bijagó people, who occupy only part of the archipelago. The Bijagós ethnic group occupies some 20 islands in the Bijagós Archipelago, setting others aside as sacred, or for seasonal agriculture or grazing. Villages are small, and the Bijagos are a people who dwell in small villages, or tabancas, formed by houses of mud and straw. The economy depends on subsistence and mixed production. They grow rice and oil palm, cashews and kola nuts, as well as catch fish and raise livestock. Rice is grown in flooded fields after the rains, and palm products are central to daily life. Women often run the household and farm plots, while men fish at sea and collect palm sap.
Social organisation is distinctive. A number of the inhabited islands have matrilineal societies, where women traditionally wield power, manage the household and instigate marriage proceedings.
The islands are linked to the mainland through commerce and migration. Since the 1990s, migrant fishermen from Senegal, Liberia and Sierra Leone have also been settled in parts of the archipelago, and fishers, traders, fish-smokers and transporters originating from across West Africa settle within or pass through fishing camps (economic enclaves) dispersed across the islands and along the mainland coast. These arrivals have created tension over fishing closures and sacred forests.
Marine ecology and pressures
Freshwater inflow from the island rivers supports life in the surrounding sea. Island rivers release nutrient-rich freshwater into the ocean, creating a breeding ground and habitat for many species, including fish, crustaceans and sea turtles. Hippopotamuses and manatees, also found in these waters, have spiritual significance for the Bijagó. The archipelago's sacred sites are closely connected to conservation: a strong correlation has been shown between restricted sacred sites and high levels of biodiversity.
Several threats have been identified. Overfishing by these small-scale fishers, along with largely unregulated fishing by industrial trawlers in deeper waters, is one of the threats to the archipelago's ecology. Other pressures include tourism, bauxite mining in nearby parts of the mainland, and offshore oil exploration.
Resistance to colonial control
The islands resisted outside powers for centuries. In 1535, Dom Luis sent a force to conquer the islands, but the islanders' strong navy destroyed it, leaving few survivors. In 1849, the British and French mounted a joint expedition to 'pacify' the islands, but they were repulsed. Resistance continued into the twentieth century. The Bijagós led a prolonged revolt throughout the archipelago from 1917 to 1925, resulting in further Portuguese oppression. Queen-priestess Okinka Pampa ruled from 1910 to her death in 1930, and she negotiated a favourable peace treaty that ensured semi-autonomy and safeguarded the islands' traditions.
Formal annexation came late. Sources differ on the exact year, with some giving 1936 and others 1937. Mainland Guinea was fully occupied by 1915, and the Bijagos in 1936, marking the end of the pacification campaigns. One encyclopedic entry gives 1937 instead. The islands were not formally annexed by Portugal until 1937.
Climate and seasons
Guinea-Bissau has a hot and humid tropical climate whose yearly rhythm depends on two alternating wind systems. In the rainy season, the West African monsoon pulls moist air off the Atlantic onto the mainland. In the dry season, the harmattan carries hot, dusty air from the Sahara. The position of the Intertropical Convergence Zone over the region, which shifts through the year, helps determine which of these systems dominates at a given time.
Sources differ on the exact timing. One describes the rains as running from June to October, while another places them between mid-May and mid-November. Most agree that the heaviest rain falls in July, August and September, when the monsoon winds bring the most moisture. The dry season, from about November or December to April, is the least rainy period. Harmattan winds bring the driest and dustiest air from roughly mid-December to mid-April, and in some descriptions they also cool temperatures slightly.
Rainfall totals also vary by source. A national climate submission gives 1,500 to 2,000 mm a year for the coastal zone and 1,000 to 1,500 mm for the interior. A study of the 2020 rainfall uses 1,500 to 2,500 mm for the coast, and a climate atlas reports more than 2,000 mm overall. The coast generally receives more rain than the interior, and the north is comparatively drier. Temperatures are fairly stable across the year: the annual mean is about 26.3°C, with the coolest months, December and January, around 24°C. The hottest period runs from February to May. In Bissau, daytime highs in March and April often exceed 35°C, and the interior is hotter than the coast, where sea breezes provide some relief. Humidity often exceeds 80% during the wet season.
Seasonal rain shapes economic and daily life. Agriculture is largely rain-fed, so the irregular start and end of the wet season directly affect planting and harvests and, in turn, food security. Heavy rain and flooding also degrade roads and make travel difficult, which limits access to isolated rural areas during the wet months.
Climate variability and extremes are a significant feature of the country. The West African monsoon is less stable than its eastern counterpart, and prolonged droughts like those of the 1970s and 1980s remain possible. Reported drought years vary between sources: one lists 1977, 1979, 1980 and 1983, while another names 1973, 1983 and 2012. Floods are also recurrent, especially on the coast, and 2020 saw exceptionally high rainfall that exceeded the climatological average at the monitored stations. Tropical storms and surges affect the coastal population, which is particularly exposed. Year-to-year and multi-decade swings are partly linked to sea-surface temperature patterns in the Atlantic and Pacific, including El Niño and La Niña cycles. Projections point toward more intense rainfall extremes alongside longer dry spells, a combination that raises the risk of both flooding and drought.
Biodiversity and conservation
Guinea-Bissau's ecosystems run in a sequence from the Atlantic shore inland. Tidal mudflats and mangrove forests line the coast and estuaries, followed by wetlands, woodland savanna, palm groves and semi-dry forest. The Bijagós archipelago is the most ecologically concentrated part of this sequence. Its land area is roughly 90,000 hectares, and a further 100,000 hectares or so are exposed at low tide, of which about 76,000 hectares are mudflats and 35,000 hectares mangrove. Mangroves cover about 326,000 to 339,000 hectares of the country, or roughly 8–9% of its territory. Several sources describe this as the highest national proportion in the world, although the exact figures differ between datasets. The Cufada Lagoons have been designated a wetland of international importance under the Ramsar Convention.
The archipelago is important for species that depend on both marine and tidal habitats. It is widely described as the most significant site in West Africa for green turtle nesting, and the island of Poilão is the largest nesting site for green turtles in West and Central Africa. Migratory birds use the islands in large numbers, with estimates of around one million birds per year, and the area also supports dolphins, hippopotamuses and manatees. The West African manatee, a species often called the "forgotten" sirenian, has one of its largest African populations in the mangroves, rivers and wetlands of this coast. Its main threats include illegal hunting for meat and for body parts used in traditional medicine. Mangroves are also under pressure. Clearance for rice fields, shrimp farming, urban growth and roads is the largest concern, and mangrove wood is cut for charcoal, firewood and construction.
Estimates of mangrove loss vary by source and period. The IUCN reports a decline of 32% since 1940, while a 2025 commentary by a Guinea-Bissau practitioner puts the loss at almost a third over 80 years. A study of 1990–2007 satellite maps, by contrast, recorded a net increase of about 14%, and its authors noted that no consistent recent assessment existed. Rice cultivation is a major cause of mangrove clearing, because farmers often abandon degraded rice fields for lack of resources to maintain their earthen dikes and then cut new mangrove land. Forest loss has also shifted. Cashew expansion has eased pressure on mangroves but has driven clearing in upland forests, and Global Forest Watch data show a sharp rise in primary forest loss after 2012. Figures for total forest loss over the past two decades also differ widely between dashboards and summaries.
Conservation policy rests on protected areas and international partnerships. UNESCO designated the Bolama-Bijagós area a biosphere reserve in 1996, citing the balance that local communities maintain with nature. Sacred sites are a central part of that balance. Animist beliefs restrict economic and subsistence activity in sacred areas, which include mangroves, beaches and small islands, and some researchers have found a strong link between restricted sacred sites and high biodiversity. The Orango National Park extends about 10 km offshore and contains roughly 17,400 hectares of mangrove. The national public body responsible for protected areas is the Institute for Biodiversity and Protected Areas (IBAP). According to one source, eight coastal, marine and terrestrial parks cover 26.4% of the national territory, while Key Biodiversity Area data give a protected share of about 50% for the archipelago alone. UNESCO has also supported a World Heritage nomination for the islands. Mangrove restoration has increasingly relied on local communities. Mass planting of seedlings has often failed, with reports that nearly 80% of seedlings did not survive, so ecological approaches to restoration have been favoured since the mid-2010s.
Biodiversity underpins local livelihoods. Mangroves act as nurseries for fish, molluscs and sea turtles, and they sustain the coastal fisheries on which many households depend. They also store carbon: one estimate puts the average at around 394 tonnes of CO₂ per hectare, much of it below ground, so clearing and draining them releases that carbon. Mangrove timber is used for construction because it is termite-resistant, and wood is burned for charcoal. In the archipelago, the sacred-site system and fishing are linked to the protection of marine resources, and ecotourism has been proposed as a way to generate income without eroding these ecosystems. Government plans to market the country as a "Land of Biodiversity" reflect the same logic: the economic value of the islands depends on keeping their ecosystems intact.
Natural resources and land use
Fisheries and timber
Fish and timber are the resources that are actively harvested, and both are under strain. The Atlantic coastline is rich with shellfish and fish, and the waters around the Bijagós Archipelago are known for large tarpon. Weak regulation and overharvesting have cut into the catch. Overfishing, combined with lax laws, has significantly reduced fishing potential. In the early 1990s, joint ventures with Portuguese, Algerian and Russian firms were a major source of state income, accounting for about 40% of government revenues between 1992 and 1996. One estimate suggests that about 0.25 and 0.3 million metric tons could be harvested if illegal fishing were eliminated.
Timber production has been organised differently. The Socotram parastatal has since been privatized and split into four private companies, which was intended to raise efficiency and output. Forestry is considered underused, and one estimate holds that proper management could produce at least 100,000 metric tons annually without jeopardizing the ecology. Pressure on forests comes mainly from clearing. While the move to cashew nut farming is lowering pressure on the mangroves, it is driving deforestation in the upland forests. Satellite monitoring data cited by Mongabay show that the rate of primary forest loss quadrupled in Guinea-Bissau between 2012 and 2013 and has largely remained at that level.
Forest, arable land and grazing
Sources give different figures for forest cover, partly because they use different definitions and dates. Global Forest Watch reports that in 2020, Guinea-Bissau had 2.31 Mha of natural forest, extending over 68% of its land area. IndexMundi, using FAO-based definitions, gives a forest area of 70.41% of land area as of 2020. A land-cover study covering 1975 to 2013 reports a much steeper decline, losing about 77 percent of its forests, with only 180 sq km remaining, mainly in the south near the Guinea border. Because these sources use different classes and periods, their figures are not directly comparable.
Estimates of arable land also vary by year and source. The World Bank series reported arable land in Guinea-Bissau as of 2014 was about 10.67% of the total land area, while the latest value in the same series is 14.1 percent from 2023. Total agricultural land, including pasture and permanent crops, is larger, at 29.9% of the land area in Guinea-Bissau. Rice is the leading arable crop, covering about 30% of the total arable land. Land use has shifted over several decades. Agricultural areas have doubled since 1975, and savannas dominate the land cover, accounting for about 45 percent of the country's land surface. Grazing pressure is also significant; overgrazing is listed among the country's severe environmental problems, alongside deforestation, soil erosion and overfishing.
Mangroves are another major land class, covering 8% of the country by one estimate and over 9 percent of the country's land surface by another. Their trend is disputed. One land-cover study reports that between 1975 and 2013, mangroves decreased by 6.4 percent, or 220 sq km. A separate analysis of maps from 1990 to 2007 found the opposite, with an increase of 14% of mangrove over that period.
Mineral deposits
Guinea-Bissau's known mineral deposits are substantial but largely undeveloped. Bauxite was found near Boé in the 1950s, and they were never commercially viable due to low world prices, but as these have trebled over the past few decades, the economic prospects have become more enticing. A lease was granted in 2007 to a company called Bauxite Angola. Phosphate deposits near Farim have been known for decades. The first feasibility studies regarding their exploration were completed in the mid-1980s. Yet no company has been able to kick-off full-scale digging of the 100 or so million tons of ore identified.
Reserve estimates differ widely. One source puts bauxite reserves at 17 million tons, while another gives a figure of 113 metric tons, with 44% aluminum oxide, which appears to be a units error in the original. Some sources also list gold, diamonds and heavy mineral sands, though these are less well documented. Political instability and conflict since independence have been cited as the main obstacles to development. Despite these resources, they remain largely unexploited due to a challenging historical context marked by political instability and civil conflict.
Offshore petroleum
Offshore petroleum is the most uncertain resource. Exploration began early; petroleum operations in the AGC zone began in 1958, with the Exxon company active in Guinea-Bissau. The licensing picture is more recent. In total, 14 offshore blocks have been licensed to several firms which have been exploring them. In 2024, offshore explorer Apus Energy drilled the Atum-1X well, targeting an estimated 314 million barrels of recoverable crude near the Senegalese maritime border. Estimates of this kind remain preliminary; one report notes that recent reports give hope that offshore deposits from these blocks may be the first economically exploitable hydrocarbons in the country, although these are only preliminary estimates.
Boundary questions complicate development. A 1994 U.S. State Department profile noted that any potential off-shore petroleum reserves may lie in the area which the International Court of Justice declared in 1991 to be Senegalese maritime territory. Cooperation between the two countries has been organised through a joint body. The AGC also plays a role in developing regional cooperation in the oil and gas sector, as well as in mining and fisheries.
Population, ethnic groups and languages
Population size and distribution
The World Bank records a population of 2,201,352 for 2024, according to the World Bank collection of development indicators. UN-based projections place the mid-2026 figure at about 2.3 million, and these are estimated by the United Nations, Department of Economic and Social Affairs, Population Division rather than counted directly. The last full census was held in 2009, and the transitional government in Bissau has confirmed that Guinea-Bissau will proceed with its fourth General Population and Housing Census, which had been postponed from 2025 because of funding delays. Growth is fast, with World Bank estimates from 2024 put Guinea-Bissau's population at around 2.2 million, with an annual growth rate of 2.2 percent.
Most residents live in the countryside. In 2024 about 45.7 percent of people were urban (1,006,379 people in 2024), and the rural population has been the larger share since the 1960s. The capital, Bissau, is by far the largest city, with 439,704 residents, and Bafatá, Gabú, Bissorã, and Bolama are among the top five most populated cities in the country. Dividing Bissau's population by the national total gives roughly one-fifth of the country's people living in the capital, though the two figures come from different estimate series. Women slightly outnumber men: the UN-based 2024 figures show 1,088,010 male and 1,113,342 female residents.
Ethnic groups and settlement patterns
Guinea-Bissau's ethnic composition is diverse, and estimates vary by source. A recent compilation lists 25.5% Fulani; 19.3% Balanta; 17.8% Mandinka; 13.6% Manjak; 9.3% Papel, with smaller groups including Mankanya and Biafada. Older official summaries differ. A 2005 U.S. State Department profile gave Balanta 30%, Fula 20%, Manjaco 14%, Mandinga 13%, Papel 7%, and a 2018 Chinese government profile put the Balanta at 27 percent, the Fula at 23 percent and the Mandinka at 12 percent (There are 27 ethnic groups). The gap likely reflects the absence of a recent census and the use of different estimation methods.
Settlement follows broad regional lines. Fula and Mandinka speakers are concentrated in the north and northeast. The Balanta and Papel live mainly on the southern coast, while the Manjaco and Mancanha occupy the central and northern coastal areas (Other important groups are the Balanta and Papel, living in the southern coastal regions, and the Manjaco and Mancanha, occupying the central and northern coastal areas.). The Balanta are commonly described as the second largest group, representing around a quarter of the population. Urban areas are more mixed; one 1994 profile noted a notable lack of tribal tensions in cities.
Languages
Portuguese is the official language (Languages: Portuguese (official), Creole, French, many indigenous languages, including Mandinka and Fula.). Portuguese is mainly used in government, formal schooling and official documents. In daily life, the Creole is a commonly used language. The Guinea-Bissau Creole is a language based on Portuguese vocabulary, and it serves as a common tongue across ethnic lines. Many people also speak their ethnic language at home, and the Balanta, Mandinka, Pulaar and others are all recorded as spoken in the country.
Demographic indicators
Life expectancy estimates have risen over time. The World Bank puts it at 64 years for 2024, and UN-based 2026 estimates give 64.6 (life expectancy at birth, both sexes combined); Females 66.9; Males 62.1. An earlier life expectancy estimate for 2019 was 59.7 years. Infant mortality figures also differ by source: UNICEF's country profile gives 42 deaths per 1,000 live births, while the UN-based Worldometer estimate is 46.5 (infant deaths per 1,000 live births). The World Bank series records 43.1 % in 2023, and the under-five rate is 67.3 deaths per 1,000 live births in 2024. Literacy is harder to pin down; one overview based on older data says only 60 percent of the nation is literate. The population is also young: the median age in Guinea-Bissau is 19.6 years (2026), and the total fertility rate is 3.6 (Live Births per Woman, 2026).
Cities, towns and administrative divisions
Bissau is the capital and largest city. It lies on the Geba River estuary, off the Atlantic Ocean, and serves as the country's major port as well as its administrative and military centre. A 2015 estimate puts its population at 492,004. The 2009 census recorded about 387,900 people in the Bissau autonomous sector, which covers only 77.5 km² (see the regional table below). In 1941 the capital was transferred from Bolama to Bissau. The city's municipal history began earlier: its town status dates to 1863 and city status to 1917 .
Bissau's landmarks reflect its colonial and independence-era history. The fortress of São José da Amura, with stone walls built between 1753 and 1758, stands over the waterfront and is among the oldest European-built structures in the country . It houses the army headquarters, and Amílcar Cabral's mausoleum is inside its barracks . Nearby, the Pidjiguiti dock area commemorates the 3 August 1959 killings of striking dockworkers, an event that pushed the nationalists towards armed resistance. The Bissau Cathedral is dated inconsistently across sources: one guide gives 1945 , while a city timeline gives 1935 . The Presidential Palace still bears damage from the 1998–1999 civil war , and the old colonial quarter, Bissau Velho, retains much Portuguese-era architecture .
The move from Bolama is central to the city's development. In 1879, Bolama became the first capital of Portuguese Guinea, but a shortage of fresh water meant that Bolama could never hope to develop into a major city, and the colonial capital was moved to Bissau on 6 December 1941. One account credits Bissau's deeper harbour and better logistics as further reasons. Thereafter, the town of Bolama slowly fell into decay. Its population stood at 4,819 (2009 census). After 1973, the PAIGC declared the capital of the rebel territories to be Madina do Boé, while Bissau remained the colonial capital until independence.
Other towns serve as seats of the regions. Bafatá is the capital of an inland region covered with savannah or light savannah woodland, and it lies in the eastern part of the country. Gabú is the seat of Gabú Region, which at about 9,150 km² is the largest region by area . Canchungo is one of the six sectors of Cacheu Region in the west, which borders Senegal and whose own seat is Cacheu town . The sources consulted give little detail on Canchungo's specific regional functions beyond this administrative role.
Guinea-Bissau is divided into 8 regions and 1 autonomous sector. The regions are further subdivided into sectors, and sources differ on the count, giving a total of 39 sectors in one case and 37 Sectors in another. Sectors contain sections, which in turn contain towns, villages, localities, settlements, communities, etc. The regions are commonly grouped into three provinces: Leste (East) (Bafatá and Gabú), Norte (Biombo, Cacheu and Oio) and Sul (Bolama, Quinara and Tombali). Regional capitals also vary between sources: Oio's seat is listed as Farim in one table and as Bissorã in another .
Local government is weak. To decentralize power, an administrative region and eight regions were created after the turbulent one-party and military period of the 1980s and 1990s. However, entries on several regions state that there has not been any local administration since the 1998-99 Guinea-Bissau Civil War, and social services are delivered by civil society organizations and central government agencies. Bolama Region, whose seat is Bolama town, consists primarily of the Bijagós Archipelago off the country's southern coast, together with a small coastal strip around São João.
Early trade networks before colonial rule
The area's precolonial past is only partly recorded in the archaeological record. Britannica states that the region had been occupied for at least a millennium, first by hunters and gatherers and later by decentralized farmers who used iron tools for rice cultivation. From the 13th century, interethnic change pushed some of these farming groups toward the coast, while others mixed with Mande newcomers as the Mali Empire expanded westward.
Kaabu, also spelled Gabu, is the best-documented precolonial polity in the territory. According to oral tradition it was founded by Tiramakhan Traoré, a general sent by Sundiata Keita to take the western lands, and it initially served as Mali's gateway to the Atlantic. Mandinka settlers followed. As Mali's central authority weakened, Kaabu became independent. Its heartland lay around Gabu in the east, where a warrior aristocracy kept power through military strength and control of trade, and where enslaved people formed a large share of the labour force. Kansala, its last capital, was destroyed in 1867 in the Battle of Kansala. Accounts differ on the dates: some place its independence in the 15th century, while others say the kingdom dominated the region from the 16th to the 19th century.
Kaabu's economy was tied to long-distance commerce. Gold reached the region from the Bambuk and Bure goldfields, which were linked to the trans-Saharan trade networks that carried gold and salt across the desert. Kaabu's own exports included gold, kola nuts, beeswax and hides, along with captives. In return it received salt, cloth, horses and manufactured goods. Oral historians known as griots preserved much of this memory, and an excavation of Kansala that began in 2024 and involved Senegalese archaeologists has since uncovered physical traces of the capital, giving partial material confirmation of traditions that had been transmitted orally.
Before the Portuguese arrived, the coast was not organized around the Atlantic trade. Trading networks reached the Atlantic littoral, but the coastal peoples, including the Balanta, Papel and Manjaco, were known for decentralized and localized political systems, governed by councils of elders and by consensus rather than by kings. Small kingdoms and chieftaincies also existed beyond Kaabu's core. The Portuguese established their first trading post in Papel territory in 1687, and by then the coast was already linked to inland trade through rivers.
The Atlantic and Islamic trade systems interacted in the sub-region before the slave trade expanded. Portuguese navigators first came to West Africa in search of gold, and they found Muslim merchants already entrenched along the coast. Trans-Saharan routes had long demanded captives as porters and for sale in North Africa. After the Portuguese failed to establish a firm base on the mainland, Cape Verde became their launching point for voyages to the Upper Guinea coast to buy captives taken in regional wars and raids. From the 1440s, small Afro-Atlantic settlements grew along the rivers as a dispersed network of trading posts, feeding the Atlantic slave trade toward Cape Verde, Europe and the Americas.
Evidence for early settlement has clear limits. Oral traditions, griot genealogies and written accounts by outsiders provide much of the chronology, while systematic archaeology of the coastal and riverine zones is sparse, and many dates are inferred rather than confirmed. Scholars therefore treat the sequence of states, trade volumes and the timing of Kaabu's independence as subject to revision, and they emphasize that the surviving evidence reflects the interests of particular groups.
Portuguese colonization and territorial formation
Portuguese contact with the coast is traditionally dated to 1446, when the explorer Nuno Tristão arrived, although he was a knight of Henry the Navigator's household and is traditionally thought to be the first European to reach the region of Guinea. Later historians have questioned how far he travelled, since more recent historians believe he did not go beyond the Gambia River. Tristão's early activity was closely tied to the slave trade. His reports of easy profits in slave raiding prompted numerous Portuguese merchants and adventurers to apply to Henry for a slave-trading license, and he was then sent further south to find new raiding grounds. Despite this early start, Portuguese settlement developed slowly, and few trading posts were established before 1600.
The most important early centre was Cacheu, on the river of the same name. Its captaincy was founded and its fort built in 1588, and it was incorporated as a town in 1605. Portugal worked with cooperating local groups in the trade, and exported large numbers of Africans to the Western Hemisphere via the Cape Verde Islands. Cacheu became one of the major slave centers of the region. The trade was also shaped by Luso-African intermediaries known as lançados. In 1684, for example, the trader Bibiana Vaz helped capture the captain-major and imprison him at Farim for 14 months, which shows how far local commercial networks could challenge formal Portuguese authority. For the wider trade system, see Atlantic slave trade.
Formal administration came later and remained limited. In 1630, a "captaincy-general" of Portuguese Guinea was established to administer the territory. In practice, full administrative consolidation remained elusive, with Portuguese presence largely confined to coastal and riverine outposts. The territory was not fully separate from the Cape Verde administration for a long time: Portuguese Guinea came under Cape Verde until 1879 when it became a separate colony. Bissau illustrates how sources can disagree on dates. One source describes a Portuguese trading post established in the region of the Papel people in 1687, and another notes that the Portuguese colonial Captaincy of Bissau was founded in 1692. A royal charter of that year stipulated a garrison of forty men and the construction of a fortress. Other accounts date the town's founding to 1765, when Bissau was founded as a military and slave-trading center.
Portuguese control over the interior was not established until much later. Portuguese conquest and consolidation of the interior did not begin until the latter half of the 19th century. Campaigns were carried out with local allies. Portuguese forces under Maj. Teixeira Pinto, with some assistance from the Muslim population, subdued animist tribes and eventually established the territory's borders. The interior of Portuguese Guinea was brought under control after more than 30 years of fighting, and the mainland was fully occupied by 1915. Borders were set largely by diplomacy. The frontier between French Guinea and Portuguese Guinea was based on an 1886 convention between France and Portugal; demarcation was completed in 1905. For most of the distance this boundary follows arbitrarily established straight-line segments or the midpoint of rivers. Portugal also lost the Casamance region to France, and a dispute with Britain over Bolama was decided in Portugal's favour through arbitration in 1870.
The Bijagós Islands were the last area to be brought under colonial control. Their islanders had destroyed a Portuguese force in 1535, leaving few survivors. In 1849, the British and French mounted a joint expedition to 'pacify' the islands, but they were repulsed. Resistance continued under Okinka Pampa, who ruled from 1910 to her death in 1930, and is revered across the islands for resisting Portuguese rule and then negotiating a favourable peace treaty that ensured semi-autonomy. The end date varies by source. One State Department profile states that final subjugation of the Bijagos Islands did not occur until 1936, while another reference says the islands were not formally annexed by Portugal until 1937.
Independence struggle and early independence
Founding of the PAIGC and the armed struggle
The African Party for the Independence of Guinea and Cape Verde (PAIGC) was founded in 1956 by Amílcar Cabral, Rafael Barbosa and others, with the goal of independence for both territories. At first the party aimed to win independence through peaceful campaigning. That approach ended after the Pidjiguiti dockworkers' strike of 1959, when the Portuguese brutally suppressed a strike by dockworkers in Bissau, and Cabral moved the party's headquarters to Conakry to prepare for armed struggle. The war against Portugal was launched in January 1963, after several years of mobilization and military training abroad.
The PAIGC built its strength in the countryside rather than the towns. It developed grassroots bases in rural areas, on the premise that the peasantry was the core of a genuine revolution. Within a few years it extended its control; the first liberated zones were set up in 1965, and by mid-1973 the party had extended its liberated territory to cover more than two-thirds of the country. Support from Cuba, China and the Soviet Union strengthened the movement militarily. In the liberated areas, the PAIGC also built schools, health clinics and agricultural projects during the war, and it set up its own administration to organize farming and education.
Cabral was killed on 20 January 1973 in Conakry, Guinea, by dissident members of his own party, believed to have been supported by Portuguese agents.
Unilateral declaration of independence (1973)
Cabral had considered a unilateral proclamation of independence since 1968, arguing that Portugal was no longer able to rule most of the Guinean territory. The step was delayed several times before it was taken. On 24 September 1973, the PAIGC-dominated People's National Assembly unilaterally declared the independence of a new Republic of Guinea-Bissau, and several foreign countries recognized the declaration. The proclamation was made at Madina do Boé, in the liberated southeast of the country. Portugal did not recognize the declaration.
At the United Nations, General Assembly Resolution 3061 (XXVIII) of 2 November 1973 treated the independence of Guinea-Bissau as a fact, but it only welcomed the accession of the people to independence and did not recognize the formation of a new sovereign state. The United States and United Kingdom threatened to use their veto if the republic applied for UN membership, so no admission bid was made. The resolution nonetheless established that a unilateral proclamation was a legitimate step for a movement that controlled part of the territory.
Portuguese recognition in 1974
The change of regime in Lisbon removed the main obstacle to recognition. The Carnation Revolution of April 1974 overthrew the dictatorship, and the new government opened talks with the overseas territories. The Algiers Accord of 1974 provided that Portugal would recognize Guinea-Bissau's independence and transfer the 125 enclaves still held by the Portuguese army to the PAIGC. Portuguese recognition took effect on 10 September 1974, and Portuguese forces were withdrawn from the country. Some sources date recognition to April 1974, which is the month of the coup in Lisbon; the 10 September date is the one given in most accounts. PAIGC thus became the first sub-Saharan African liberation movement to achieve independence, if only indirectly, through armed struggle.
Single-party rule and state direction of the economy
Luís Cabral, Amílcar's half-brother, became the first president in 1973, and the PAIGC ruled as the only legal party. The party and its counterpart in Cape Verde were constitutionally linked as "sister republics", with plans for eventual unification. The wartime administration had already been built on Marxist lines, and after 1974 the state directed the economy through the same party structures. By 1980, economic conditions had deteriorated significantly, which led to general dissatisfaction with the government.
The 1980 change of leadership
On 14 November 1980, a bloodless military coup took place in Bissau, led by Prime Minister General João Bernardo Vieira. It deposed President Luís Cabral, who had held office since 1973, while the war of independence was still in living memory. Vieira announced a Revolutionary Council that would exercise all executive and legislative powers. He abolished the State Council and the Council of Ministers, and seven of the nine members of the new council were black FARP members, which increased his reliance on the army.
Accounts differ on the motives. Initial reports attributed the coup to racial tension between the black population and the mixed-race population, reflected in Cabral's Cape Verdean origin. Other analyses point to the role of the army and to the end of the planned union with Cape Verde, which fractured the political union with Cape Verde. A new constitution was adopted in 1984, proclaiming Vieira president and returning the country to civilian rule. Vieira's period of power was then marked by repeated attempted coups, and he was ousted in the civil war of 1998–1999.
Coups, civil conflict and political instability
The 1998–1999 civil war began as a dispute inside the armed forces. In June 1998 President João Bernardo "Nino" Vieira dismissed Brigadier-General Ansumane Mané as chief of staff, accusing him of smuggling weapons to separatists in Senegal's Casamance region. Mané rejected the dismissal and launched a mutiny that, on 7 June, gave his forces control of military barracks and Bissau's international airport. The conflict widened beyond a single revolt. Troops from Senegal and Guinea backed the government, Nigerian and French forces also intervened, and ceasefires were repeatedly agreed and broken. A peace accord signed in Abuja in November 1998 led to a government of national unity in February 1999, but fighting resumed in May 1999, when Vieira was forced to surrender and went into exile in Portugal. Casualty figures are uncertain; WorldAtlas gives an estimate of about 655 deaths, and the war is generally described as having destroyed major infrastructure and disrupted public order and public finances.
The post-war period brought a brief return to elections, followed by a sharp decline in governing capacity. Kumba Yala, an opposition leader, won the presidency in 2000 and became the first non-PAIGC head of state. Sources differ on the date of the vote: ReliefWeb places the presidential election in January 2000, while the PRI timeline gives November 1999. Yala's government was marked by constant reshuffles, with four prime ministers nominated and dismissed between 2001 and 2003. He dissolved parliament in 2002 without holding the promised legislative elections, leaving the country without a functioning government for several months, and he dismissed Supreme Court judges. The IMF and the World Bank suspended aid over weak public financial accounting. On 14 September 2003, General Veríssimo Correia Seabra led a bloodless coup, citing the government's "incapacity", a stagnant economy and military anger over unpaid salaries. Yala resigned on 17 September, and a political agreement barred him from politics for five years. A civilian-led transitional government under businessman Henrique Rosa followed, and legislative elections in 2004 returned the PAIGC to most seats.
Coups and assassinations have recurred since then. The first came in November 1980, when Vieira overthrew Luís Cabral, a move that ended plans for union with Cape Verde. A failed coup in October 2004 was followed by a mutiny in which Seabra, by then army chief of staff, was killed by soldiers protesting salary arrears. Vieira, re-elected in 2005, was assassinated by soldiers in March 2009. The April 2012 coup, which followed a disputed run-off-period election, was described by IRIN as the fifth successful seizure of power since independence, and it deepened the split between civilian and military leaders. In February 2022 gunmen surrounded the presidential palace during a cabinet meeting, and a five-hour battle left several people dead. One compilation counts at least sixteen coups or coup attempts between 1974 and November 2025, a figure that depends on how failed plots and mutinies are classified.
Multiparty politics was introduced through a long and uneven process. Scholarly work frames the period from 1991 to 2021 as one of "militarized democratization", but formal competitive elections only took shape after 1994, when the PAIGC amended the constitution and Vieira won the country's first free presidential election. Institutionalization proved difficult. Presidents have rarely completed their terms, and many left office through irregular means, most often military action. Analysts also report that the legislature, judiciary and electoral processes have been subject to manipulation or dissolution by presidents and military leaders, and that the civilian justice system has been too weak to restrain armed actors. Donors reduced support at key moments; the European Union withheld large sums for years over instability and, after the 2012 coup, budget aid was withdrawn.
The explanations offered in scholarly and policy literature overlap but are not identical. The most widely cited factor is drug trafficking, particularly the cocaine route between Latin America and Europe. Human-rights reports attribute many political-military crises to struggles over control of trafficking networks involving officers and politicians, and an assassination in 2009 has been linked to such a struggle. Other studies argue that after the 2012 coup the military took direct control of trafficking operations, which weakened the civilian state further. Other accounts emphasize personal rivalries within the officer corps over patronage and resources, ethnic dimensions of political appointments under Yala, and economic grievances such as unpaid wages. Researchers also dispute how far the state itself has been implicated in trafficking, and the "narco-state" label is contested. Repeated West African stabilization efforts, including ECOWAS and African Union missions, have not prevented subsequent coups.
Current political transition (2025–2026)
Guinea-Bissau's transition began with a military takeover that followed a contested presidential election. The takeover unfolded amidst a deeply contested presidential vote held just days earlier, on 23 November. Before the official count was published, both the sitting president, Umaro Sissoco Embaló, and his main challenger, Fernando Dias, claimed victory. Sustained gunfire erupted in the capital, Bissau, near key government installations including the presidential palace, the election commission, and the Interior Ministry. The officers justified their action by alleging a plot by politicians and "national drug lords" to manipulate the results (General N'Canha justified the military's actions as a necessary response to what he described as an ongoing plot by politicians and what he termed "national drug lords" to destabilize the country). The military then closed land, air and sea borders, imposed an overnight curfew, and suspended the electoral process. Several opposition and government figures, including Dias and former prime minister Domingos Simões Pereira, were detained.
Transitional government
The military grouping calls itself the High Military Command for the Restoration of National Security and Public Order. On 27 November 2025, the army installed Major-General Horta Inta-A Na Man as transitional president, a day after the coup. Inta-A was named prime minister Braima Camará's successor-level figure in the structure, and Ilídio Vieira Té, the former Finance Minister under Embaló, became prime minister. Ilídio Vieira Té, a close Embaló ally, was appointed prime minister, and his cabinet was formed days later. The new government consists of 23 ministries and five secretariats of state. All members of the new cabinet are said to be linked to the electoral camp of deposed President Umaro Sissoco Embalo, with four having served in the previous government. The junta presents the arrangement as a 12-month transition, with elections meant to return power to civilians.
Constitutional referendum
On 30 August 2026, voters were asked whether to bring into force a new constitution approved by the National Transitional Council. The draft would replace the parliamentary system with a presidential one. It would also allow the head of state to appoint and dismiss the prime minister and members of the government, and to dissolve parliament. Under the existing constitution, by contrast, the legislature names the prime minister. The National Electoral Commission reported provisional results on 1 September: about 70% in favour and 30% against. The official tally shows 383,116 yes votes and 160,954 no votes, Registered voters/turnout 914,428 62.63%, while a Reuters-based report put turnout at almost 60 per cent of registered voters. The opposition PAIGC called for a boycott, arguing that political parties have been excluded from the process. Critics also said the draft was prepared without consultation, and that "no" supporters were not authorised to campaign. Reporters observed that polling stations in the capital Bissau were largely empty on Sunday.
Election timetable
A presidential decree issued in January 2026 set 6 December 2026 for presidential and legislative elections. Due to a constitutional amendment approved in a referendum earlier in the year, the 65 members of the National People's Assembly (previously 102) are elected by two methods. On 8 October 2026, Prime Minister Ilídio Vieira Té announced that the conditions necessary to organise presidential and legislative elections scheduled for December 6 had not been met. The National Electoral Commission said that holding the vote on that date was not technically possible, although it did not formally announce a postponement. Officials pointed to missed legal deadlines; candidacies for the presidency were due at the Supreme Court by 6 October. Té also said that "no political party is yet in an ideal position to contest the elections". No new date had been announced at the time of writing.
Embaló's return and source discrepancies
Embaló had said he would return from exile in Morocco and stand in the elections, but the junta stated that "security conditions" were not met for Embalo's return. The junta barred former President Umaro Sissoco Embaló from returning to Guinea-Bissau earlier this month, citing national security and public order concerns. Reporting on these events varies in several respects. Some outlets describe the November 2025 events as a self-coup by Embaló, while others describe a military seizure of power after his arrest. The transitional president's name appears in several forms, including Horta Inta-A Na Man, Horta N'Tam and Horta Inta-a, and the prime minister's surname is sometimes given as Té or Te. One outlet also describes the referendum as a "30-month" process, which conflicts with the 30 August vote date reported elsewhere. Where sources disagree, the dates and names above follow the most consistent official or wire reporting.
Agriculture, fishing and the cashew economy
Cashew as the dominant export
Cashew nuts are the central pillar of the economy, though sources differ on the exact figures. One BCEAO-based estimate attributes 93% of the country's total export earnings in 2023 to raw nut exports, while other reports put the share at 95 percent. The contribution to output is less clear: the World Bank puts it at approximately one-quarter of national GDP, whereas another report cites 10 percent of GDP. The crop's social weight is larger than its fiscal one. A study of cultivation describes it as the main source of income in rural areas, involving roughly 80 percent of the population to varying degrees. Women and children carry out most of the harvesting, and women dominate the sale of by-products such as cashew juice and wine.
Production is held back by low productivity and high losses. Yields are below 0.4 t/ha compared to 0.8–1 t/ha in India and Vietnam. In the marketing chain, post-harvest losses can reach 25 percent, while agrologistics costs account for approximately 34 percent of the export price. Most raw nuts are shipped to India for processing, and local processing remains marginal; one source notes that in 2012 less than 500 tons of processed cashew nuts were exported. Export volumes also swing sharply, from 120 to 170 thousand tons in the period 2009-2011. Smuggling and unrecorded stocks make the official numbers uncertain, and the government's purchase price matters greatly to farmers: the farmgate price reportedly rose from 300 CFA francs per kilogram in 2024 to 410 CFA francs in 2025.
Fish, shrimp and marine resources
Fishing is the second pillar of the marine economy and is split into two sub-sectors. Small-scale fisheries contribute to economic output with 6% of the Gross Domestic Product, according to one study, and supply a large share of protein in local diets; the same source puts this at 35% of the animal protein intake. A different official figure, from 2015, gives a much lower contribution of about 2% to the GDP, so the sector's weight depends on the source used. The artisanal fleet is small and largely unmotorised: artisanal pirogues usually do not exceed 18 meters and only 32% are motorised.
Industrial fishing is dominated by foreign-linked vessels. Industrial fishing in Guinea-Bissau is carried out by foreign vessels chartered or reflagged to the country. An EU evaluation counted an average of 128 industrial fishing vessels (2022 figures) in its waters, and the majority of these vessels fly the Chinese flag. Under the EU partnership, the country is due to receive €17 million annually. Local benefits are limited, because catches by EU trawlers are not landed, processed, or marketed in Guinea-Bissau given the inadequate port infrastructure, and most EU-linked catches, mainly cephalopods and shrimp, supply the EU market. The fisheries also border a zone shared with Senegal.
Pressure on stocks is serious. Official monitoring is sporadic: the last artisanal surveys date from 1998, 2001, and 2003, and industrial catches are based on industry declarations and are grossly under-estimated. One study estimated that in 2017, legal catch by industrial vessels amounted to 280,620 tonnes, while their illegal catch was 62,000 tonnes, and that small-scale catches fell from 44,700 tonnes in 2013 to around 27,800 tonnes. Reconstructions by Belhabib and Pauly found totals well above the figures reported to FAO, and a sharp decline in catches over the last decade, probably linked to overexploitation.
Subsistence farming, rice and the workforce
Beyond cashew, farming is largely subsistence. Rice is the major crop and staple food, yet the country imports most of its basic food, including rice, wheat flour and sugar, which shows the gap between production and consumption. Overall, agriculture is the largest source of employment, although sources conflict on its weight in GDP: the World Bank gives a range of 30 and 50 percent of GDP, while an older dataset lists agriculture at 50% for 2017. The employment rate has been relatively stagnant at around 61 percent of the working-age population (15+), and most of the work is in low-productivity farming. Older labour-force figures, which are dated to 2000, place about 82% of the labour force in agriculture.
Growth estimates and data reliability
Recent growth has been strong but uneven. The World Bank reports that real GDP expanded 5.8% in 2025, buoyed by a strong cashew harvest and farmgate prices, while the African Development Bank records 5.0% real GDP growth, compared with 4.1% in 2024. Earlier World Bank figures gave real GDP growth reaching 4.8% for 2024, illustrating how revisions shift the baseline. The World Bank also warns that labour productivity growth fell from 6.2% over the same period to -6.8% between 2006 and 2025, despite rising investment. Growth is projected to ease to 4.8% in 2026.
Data for this sector are weak. Cashew statistics often miss stocks that remain in warehouses, are consumed locally or are smuggled, and fisheries lack a regular monitoring system. Users should therefore treat national totals, especially for catches, prices and export volumes, as approximate and compare across institutions, as the discrepancies above show.
Poverty, infrastructure and transport
Poverty is widespread, but the headline figures depend on the source and the poverty line used. The World Bank's latest national estimate, for 2021, places 50.5 percent of the population, or 886 thousand individuals, below the national poverty threshold. Estimates that use the international US$1.90-a-day benchmark are higher: the ISS African Futures project puts the 2019 share at 63.9% of the population, and the World Food Programme cites a figure nearly 65 percent. These numbers come from household surveys of sub-groups, and the results are weighted by population, so differences in method account for much of the gap.
The road network is short and mostly unbuilt to standard. Most roads outside the capital Bissau are unpaved. One widely repeated estimate gives 2,734 miles of roads, only 10 percent of them paved, while older figures from 1996 list 4,400 km of roads, of which 453 km were paved. For isolated rural areas the effect is direct: a World Bank rural transport project rehabilitated 113 km of rural roads, which improved access to markets, schools and health centres that had been not accessible all year round due to poor road conditions. The country has no rail network. A line to Guinea, agreed with Portugal in 1998, was never built because the civil war broke out that year.
Ports carry nearly all of the country's external trade, and their condition is a binding constraint. The Port of Bissau, on the Geba River estuary, handles more than 85% of national exports and 90% of imports. It was designed for about 5,000 containers a year, yet serves nearly five times as many today, and siltation threatens its access for larger freighters. Shipping through Bissau is costly: a comparison cited by the Enhanced Integrated Framework put the extra cost at US$1,000 per container compared with Banjul. Phase one of a modernization programme, completed in 2023, raised container handling capacity from 5,000 to 70,000 TEUs, and phase two is meant to dredge the channel and extend the docks. Secondary ports at places such as Buba, Cacheu and Bubaque mainly serve local passengers and artisanal fishing, and the lack of storage, refrigeration facilities and access roads makes it hard to move goods inland quickly.
Electricity access is among the lowest in the region, although it has improved recently. 40.5% of the total population had access to electricity in 2023, and the rate in the capital rose sharply, from 20% in 2021 to 81% in 2023. Much of the national supply still comes from thermal plants that depend on imported fuel. The main structural change is the regional grid: Guinea-Bissau is now connected to the regional grid, receiving hydropower from Guinea's Kaléta and Souapiti dams, and the OMVG interconnection has raised electricity trade capacity from zero to 170,000 kVA. Renewable energy is a further priority: the African Development Bank expects it to rise from 0 to 36% of the total supply mix. Some older secondary sources still give much lower access rates, so the figures should be read with their dates in mind.
The private sector remains small, and the business environment is difficult. In the World Bank's Doing Business survey the country ranks near the bottom, and the same assessment singled out ports, roads and electricity as the main priorities. Industrial development has received less policy attention than agriculture, and the number of state-owned enterprises fell sharply after the 1987 shift to a liberal market economy. Access to finance is also limited: only a fraction of the population maintains bank accounts.
Regional links depend heavily on neighbouring countries. Because the port is fragile, the completed bridges on the route north to Senegal are seen as an alternative outlet, but they also mean the country would depend on other countries for access to the sea if Bissau declined further. The Trans–West African Coastal Highway crosses Guinea-Bissau, linking it to Banjul in The Gambia and Conakry in Guinea. The European Union is funding the upgrading of the strategic Bissau-Ziguinchor road, which connects to Senegal. The main road crossing to Senegal runs through São Domingos, where the border checkpoint lies between Jeguë on the Guinean side and Mpack on the Senegalese side. Trade with Senegal and India is also significant, alongside the traditionally dominant links with Portugal.
Coastal vulnerability and climate change
Low elevation makes the coast the country's main climate risk. The coastal zone contains significant areas of low elevation and is home to most of the population and economic activity, making it already vulnerable to coastal flooding, especially during spring tides and storm surges. Land and infrastructure in the capital are particularly exposed. A sea-level rise study using GIS modelling found that Bissau and Suzana, where housing, infrastructure, and agricultural land are low-lying, presented the greatest flood exposure, while Bubaque, with higher ground and rain-fed farming, showed less exposure. The national figures point the same way: over 19% of the land area lies in areas less than 10 meters above sea level.
The coastline is also eroding in places. A coastal vulnerability study of the Guinea-Bissau shore found that 52% of the 87 km coastline has high to very high vulnerability. Local reports point to changing tides. In one coastal village, residents said stronger tides and storm surges had become more frequent since 2007, and they report seawater intrusion in fresh groundwater and increased land-surface inundation in other rural and urban coastal areas, including islands. Sea-level estimates differ by source. One local study cites a rate of 8.79 mm/yr, while a regional analysis of the Gulf of Guinea reports a coastal rate of 3.89 mm/yr. Older projections are less precise. One scenario based on a 2011 study estimated that with a rise of 0.13 m in 2025, 77,800 people will be flooded per year. Those figures are long-range estimates and should be read as such.
Saltwater intrusion is the most direct threat to farming. Climate change has already begun to affect coastal farmers through increased flooding and saltwater encroachment into their rice paddies. The mechanism is tied to tides. Mangrove swamp rice is strongly influenced by spring tides, which often lead to saltwater intrusion and a partial or total loss of rice production. Rising seas and shifting rainfall have also made some fields unusable: soil has become too saline for rice cultivation. The problem extends beyond fields. Seawater intrusion poses a severe threat on the country's mangroves, which are a major source of livelihood (mangrove rice) in addition to providing coastal protection and a biodiverse habitat.
Mangroves and wetlands are both a buffer and a casualty of this process. Mangroves protect inland areas, as the trees act as a buffer against waves, help to accumulate silt and create a barrier against salt water. Human engineering has weakened that buffer. Dykes built around abandoned rice fields blocked natural tidal flows that were crucial for mangrove regeneration, and without these flows, the soil salinated further and mangrove seedlings could not take root. Restoration work has tried to reverse this. In one initiative, farmers agreed to flatten out the dykes around abandoned rice fields to once again allow seawater to reach mangrove seedlings in exchange for help reinforcing dykes elsewhere. Warming and changing rainfall add further stress; one overview notes that as temperatures rise, rainfall patterns change and sea levels continue to rise, Guinea Bissau faces a range of challenges, including environmental degradation, food insecurity, coastal erosion and biodiversity loss.
Human consequences are already visible. In one village, an elder described people leaving as water slowly entered the village, and residents have asked the government to help them relocate. Scholars studying migration decisions in coastal and island Guinea-Bissau have likewise documented how these pressures interact with limited access to health care, clean and safe water, formal employment, and basic infrastructure.
Adaptation needs are large relative to national capacity. With a large and growing population in the coastal zone and a low adaptive capacity due to low national wealth and other development indicators, Guinea-Bissau appears to be highly vulnerable to sea-level rise. External finance has funded several projects. A climate adaptation project backed by the Green Climate Fund plans to reforest mangroves on 250 hectares of mangrove swamp areas in the northwest, with a total value of $10.0 million. A separate initiative financed by the Least Developed Countries Fund targets urban sites (Bissau) and rural/coastal areas (Varela, and the island of Bubaque), covering approximately 32,400 hectares and 13 km of erosion-prone coastline. Its aims include ecosystem restoration, including mangrove rehabilitation for coastal protection. A GEF-funded early-warning and climate information programme, meanwhile, lists a US$6 million (GEF LDCF) grant. Designing these measures carefully matters: regional observers warn that poorly designed concrete dikes often obstruct natural tidal exchange, increasing salt concentrations rather than reducing them.
Data limits and research on the country
Census coverage and official figures
Population data for Guinea-Bissau rest on a count that is more than a decade old. The Bank regards the stale enumeration as a drag on planning and monitoring . A 2009 headcount logged 1,497,859 people . A later table for the same census, which adds an estimated figure for people missed in the count and for residents of religious houses and orphanages, gives 1,520,830 . The difference is small, but it shows that even the census total has been revised after publication, and users need to know which version a figure comes from.
The first digital census
The new round is described as the country's first fully digital census, in which enumerators use tablets and CAPI software in place of paper forms . The census is led by the National Statistics Institute, with support from UNFPA and the World Bank . The Institute works under the Ministry of Economy, Planning and Regional Integration . In April 2025 the World Bank approved a further US$4 million grant, bringing its census financing to US$10 million , and the top-up was meant to cover cost overruns in census implementation . The census activities include cartography, a pilot survey, enumeration, data processing and the dissemination of results .
Conflicting estimates for the same years
Estimates for the same year differ considerably. A projection for 1 July 2022 gives 1,723,900 , while a macro-economic series gives about 1.9 million for 2022 , and a UN-based compilation shows 2,105,529 for the same year . Life expectancy is similarly unsettled: a 2022 estimate on Wikipedia's demographic overview gives 63.68 years , whereas Countrymeters lists 48.7 years for 2026 . The sources use different methods and reference dates, so they cannot simply be averaged.
Indicators also come from different vintages. The World Bank's $1.90-a-day poverty rate of 24.7% is for 2018 , and the 2018/19 household living standards survey is still the most recent household survey available . Unemployment figures, by contrast, are modelled ILO estimates . Analysts comparing these numbers therefore need to match the reference years and methods before drawing conclusions.
Research sources and key institutions
The National Statistics Institute, known in some records as the Instituto Nacional de Estatística, holds the main national datasets: a 1991 census, a 2002 poverty survey and the 2009 census . Its catalogue also includes a 2017 vaccination coverage survey and the 2018/19 living standards survey . Cartography for the census is handled by teams that UNFPA has trained , and the Brazilian statistics agency IBGE has been among the census's contributors and funders . Geographic research, including mapping of land, coasts and settlements, depends heavily on this census cartography and on the survey base built around it.
Constraints on researchers and policymakers
The World Bank attributes slow progress in governance and data-related reform partly to limited capacity . The Bank also reports that weak financial management information systems and the lack of a Treasury Single Account limit the reliability of budget execution records , which constrains fiscal analysis. Political disruption adds a further layer of uncertainty, because many figures carry meaningful uncertainty ranges and political crises interrupt data collection . The UNDP's country programme notes that data scarcity requires a mix of traditional and innovative monitoring methods . Researchers therefore need to treat official series, international estimates and household surveys as partially overlapping evidence rather than as interchangeable measures.
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