Guinea-Bissau weather

Get the latest coronavirus (COVID-19) updates for Guinea-Bissau with current travel advice, statistics and online resources.

Below are the temperatures expected today at popular destinations in Guinea-Bissau. Select a destination to compare today's forecast with average weather conditions.

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The weather guide for Guinea-Bissau shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.

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Which is the hottest month in Guinea-Bissau?

The hottest time of year in Bissau, Guinea-Bissau is normally October. Expect maximum daytime temperatures to reach 32°C with very high heat and humidity.

Which month has the most rain in Guinea-Bissau?

In terms of rainfall, August is usually the wettest month in Bissau, Guinea-Bissau with 544mm on average. There are normally 22 days in August with some rain.

When is it sunniest in Guinea-Bissau?

The sunniest time of year in Bissau, Guinea-Bissau is normally March with bright sunshine on average for 72% of daylight hours; that's 9 hours of sunshine per day.

When is the sea warmest in Guinea-Bissau?

The sea is usually at its warmest in Bissau, Guinea-Bissau in November when the water temperature reaches 29°C.

Metric (°C / mm) | Imperial (°F / inches)

Compare Guinea-Bissau weather with the USA

Below the Guinea-Bissau weather chart shows average maximum daytime temperature for Guinea-Bissau (Bissau) and the USA (Washington).

Maximum daytime temperature (°C)

Guinea-Bissau (Bissau)

USA (Washington)

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Dec

Metric (°C / mm) | Imperial (°F / inches)

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Guinea-Bissau weather overview

The tiny country of Guinea-Bissau borders Guinea to the south and shares its tropical climate. It has a very heavy rainy season from May to November when conditions are made unpleasant by high humidity. Things look up between December and April when Harmattan desert winds bring dryer air to the interior and trade winds perk up the coast. Dry season temperatures get higher the further you go inland but tend to plummet at night.