Guinea-Bissau

Guinea-Bissau Weather & Climate: Monthly Averages

Monthly climate averages for Guinea-Bissau, temperatures, rainfall and the best time to visit.

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Bissau

Climate overview of Guinea-Bissau

Blue skies mixed with bright contrasting clouds are a common image in Guinea-Bissau. During the rainy season the blue parts of the sky are often replaced by heavy clouds that can often cause heavy rainfall.

Guinea-Bissau has three seasons. The wet rainy season begins in June and after a major peak between mid-July and mid-September ends in the second half of October. Then follows the dry season where the temperature rises again slightly and precipitation is more rare. Around the end of the year the likelihood of dry desert wind increases. This dry wind carries cooler air full of dust and sand from the Sahara.

The period from mid-November to April is the best travel time to visit Guinea-Bissau. The months of November, December and January are slightly less hot than the months of February, March and April which mainly face high temperatures inland. Think of high maximums like 35°C (95°F) to 40°C (104°F).

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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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Bissau

Day temperature (°C)

Monthly rainfall (mm)

Monthly sunshine (hours)

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Climate map

Average daily temperature, monthly rainfall & sunshine hours across cities.

Avg day temp (°C)

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Average daytime and nighttime temperatures, yearly rainfall and sunshine.


Bissau	30°C (86°F) – 35°C (95°F)	21°C (70°F) – 26°C (79°F)	1398 mm (55 in)	2,731 hours

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FAQ

What is the best time to visit Guinea-Bissau?

The warmest month is March with daytime highs of 35°C (95°F). March is the sunniest month with 280 hours of sunshine. Guinea-Bissau has distinct dry (November to May) and wet (July to September) seasons. Explore Guinea-Bissau weather by month for a detailed breakdown.

What temperatures can I expect in Guinea-Bissau?

Daytime highs range from 30°C (86°F) in January to 35°C (95°F) in March. Nighttime lows range from 21°C (70°F) to 26°C (79°F). Temperatures are relatively stable throughout the year. See the city comparison for a full overview.

How much rain does Guinea-Bissau get?

Annual rainfall is around 1398 mm (55 in). August is the wettest month with 460 mm (18 in), while March is the driest with 0.1 mm (0 in). Use the climate map to explore rainfall patterns across regions.

How sunny is Guinea-Bissau?

Guinea-Bissau receives around 2,731 hours of sunshine per year. March is the sunniest month with 280 hours, while August is the cloudiest with just 156 hours. Overall, Guinea-Bissau enjoys abundant sunshine year-round. Compare sunshine across cities in the charts above.