Bissau Weather in August

Guinea-Bissau · August climate averages and travel tips

Avg high29°C (83°F)
Avg low25°C (76°F)
Rainfall545 mm (21.5 in)
RatingPoor 2.3/10

Bissau in August sees daytime temperatures around 29°C (83°F), dropping to about 25°C (76°F) at night. The month is very wet, with about 545 mm (21.5 in) of rain spread over 31 days, making it the wettest month of the year. Humidity averages 90%, so it feels sticky and hotter than the thermometer suggests. You get roughly 12.4 hours of daylight and frequently cloudy skies.

Is August a good time to visit Bissau?

August is not the best time to visit Bissau (2.3/10) mainly because of the rain. The weather is much better in December and January.

Visiting Bissau in August

August: deep in the rains

Bissau is hot, steamy and very wet in August. The high reaches 29°C, but humidity sits at 90%, so even a short walk can feel sticky. Rain falls every day, with thick cloud and little sunshine. This is the wettest month in the data, wetter than July and September.

You can still visit the old centre and see the Fortaleza d'Amura between showers. But muddy streets and sudden downpours can make long walks tiring. Skip plans that depend on dry roads or calm boat trips to the Bijagós Islands; rain can disrupt both.

Events and quieter streets

There's no major fixed August festival or public holiday in Bissau that visitors can count on. Guinea-Bissau's Independence Day is in September, not August. The rainy season also keeps visitor numbers lower than in the drier months, especially December and January.

If you hate crowds, August may suit you. You'll find a quieter city, though some tourism services may run less often. Prices are generally lower than in the dry-season peak, but heavy rain can make getting around less convenient.

Make the rain work for you

Keep sightseeing flexible. A shower can pass, but with rain recorded on all 31 days, don't count on a fully dry afternoon. Save indoor stops, such as the National Ethnographic Museum, for the wettest spells. For a meal, try caldo de mancarra, a local peanut stew, at a Bissau restaurant.

Travelling with kids? Short visits around central Bissau are easier than long day trips in August. Check locally before setting out for the Fortaleza d'Amura, since access arrangements can change. The cooler feel of a rainy spell may help, but the air stays damp and sticky.

August weather at a glance

Average high29°C (83°F)
Average low25°C (76°F)
Daily mean26°C (79°F)
Rainfall545 mm (21.5 in)
Rainy days (1 mm+)31
Humidity90%
Cloud cover83%
Daylight12.4 hours
Est. sunshine2.3 hours/day
Wind9.3 km/h
vs July1°C cooler than July, with 115 mm more rain.

What to pack for Bissau in August

Bissau weather in other months

Jan29°C / 17°C0 mmExcellentFeb32°C / 18°C0 mmGoodMar35°C / 21°C1 mmFairApr37°C / 23°C0 mmFairMay36°C / 24°C24 mmFairJun32°C / 25°C138 mmPoorJul29°C / 25°C430 mmPoorAug29°C / 25°C545 mmPoorSep29°C / 25°C416 mmPoorOct30°C / 25°C214 mmPoorNov30°C / 23°C12 mmGoodDec29°C / 18°C0 mmExcellent

← JulyBest time to visit BissauSeptember →

Better weather in August nearby

Nearby in August

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