Guinea-Bissau Climate
Top 5 Cities: Bissau, Bafatá, Gabu, Bissorã, and Bolama
This month in numbers
Guinea-Bissau experienced its 10th warmest April on record in 2026, with an average temperature of 29.82°C, marking an anomaly of +0.8°C compared to the 1961–1990 baseline. The three-month period from February to April 2026 also ranked as the 11th warmest on record, with an average temperature of 28.74°C, an anomaly of +0.7°C. Globally, April 2026 was the 2nd warmest April on record for land temperatures, with an anomaly of +1.1°C.
What changed
The recent warmth in Guinea-Bissau aligns with a broader trend, as the country's latest full-year average temperature in 2025 was 28.11°C, making it the 2nd warmest year on record. The long-term trend for Guinea-Bissau shows a warming of +0.89°C compared to the 1961–1990 baseline. While Guinea-Bissau experienced above-average temperatures, its one-month anomaly placed it 194th out of 234 regions globally, and its three-month anomaly was 220th out of 234, indicating that many other regions experienced more significant warming during these periods.
What’s driving change?
The warming trend in Guinea-Bissau is consistent with the global phenomenon of land warming faster than ocean. The country's reliance on rainfed agriculture also makes it particularly vulnerable to shifts in rainfall patterns, which can lead to alternating droughts and intense rainstorms, impacting food security and water resources. In March 2026, a large fire devastated the village of Tucunde in the Bolama/Bijagós Region, destroying 23 houses and affecting 469 people. This event highlights the vulnerability of communities to extreme weather.
Looking ahead
The NOAA Climate Prediction Center's seasonal outlooks suggest that flooding could occur along the Gulf of Guinea in the coming weeks with increased rainfall.
Generated by Gemini from climate data and web sources
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Data Sources
Data Sources for Guinea-Bissau
Every figure on this page is sourced from official, openly published climate datasets. Anomalies are calculated against the 1961–1990 baseline (temperature) and 1991–2020 (rainfall, sunshine, frost) - see the Methodology & Sources page for the complete dataset list and update calendar.
FAQs
FAQs
How is the climate in Guinea-Bissau changing?
Guinea-Bissau is warming in line with the rest of the world. The page above shows the latest monthly temperature anomaly versus the 1961-1990 baseline, the long-term annual trend, and the region's rank in the historical record. The trend rate is shown as °C per decade in the headline panel; you can also see the warmest and coolest years on file.
Where does the climate data for Guinea-Bissau come from?
Climate data for Guinea-Bissau comes from Our World in Data, sourcing Copernicus ERA5 and HadCRUT5 (national temperature anomaly) and the Global Carbon Project via Our World in Data (CO₂ emissions), refreshed every month, when the upstream temperature and rainfall data are refreshed.
What is the climate baseline used on this page?
Anomalies on this page are calculated against the 1961-1990 climatological baseline, which is the standard reference period used by the Met Office, NOAA, IPCC and most national climate services. Some panels also show the source-native 1901-2000 (NOAA) or 1991-2020 (WMO) baselines for verification. See Methodology & Sources for the full reference.
Which areas does the Guinea-Bissau climate data cover?
The Guinea-Bissau climate profile covers Bissau, Bafatá, Gabu, Bissorã and surrounding areas. Temperature, rainfall and emissions data for Guinea-Bissau
How often is the Guinea-Bissau climate update refreshed?
The Guinea-Bissau climate update is refreshed monthly, typically a few days after the previous month closes and the upstream provider (Met Office HadUK-Grid, NOAA Climate at a Glance, Copernicus ERA5 or the Global Carbon Project) publishes its update. See the Climate Rankings for cross-region comparisons.