Bissau Weather in August
August in Bissau brings very high temperatures, with highs of 30°C (86°F) and nights dropping to 25°C (77°F). It's the rainiest month of the year, so come prepared with waterproof gear.
Rainfall in Bissau in August
As part of the rainy season, Bissau sees around 22 days of rain in August, with an average of 460 mm (18 in). Showers during the rainy season tend to be heavy and can come down intensely. An umbrella is often not enough, so a poncho or waterproof jacket is a better choice.
Temperature in Bissau in August
In August, Bissau gets very high temperatures, with highs of 30°C (86°F). Nights cool to around 25°C (77°F). For most visitors, the main thing to prepare for is the heat during the day. With overnight lows of 25°C (77°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably. It may be the cooler month of the year, but temperatures remain warm enough for outdoor activities.
Sunshine in Bissau in August
The area experiences a moderate amount of sunshine, with approximately 156 hours of sunlight expected. Even though this month is part of the rainy season, you could still see the sun every now and then.August in Bissau has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Guinea-Bissau, check out our Bissau's climate page.
Bissau Temperature in August
Min Temperature
25°C (77°F)
Max Temperature
30°C (86°F)
Chance of Rain
73%
Precipitation
460 mm (18 in)
Rainy days
22 days
Sunshine
156 hours
Percentage Sunshine
Historical weather for Bissau in August
Browse day-by-day weather records for Bissau spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Bissau historical weather extremes in August
Based on weather observations in Bissau between 2006 and 2025, these are the recorded extremes during August.
- The hottest August day on record in Bissau reached 33°C (91°F) (August 7, 2025).
- Bissau experienced its chilliest August day on August 8, 2018, reaching only 25°C (77°F).
- Bissau registered its coldest August night on August 24, 2011, with temperatures dropping to 21°C (70°F).
- The wettest August day on record brought 218 mm (8.6 in) of precipitation to Bissau (August 1, 2015).
Best Places in Guinea-Bissau in August
Find out more about the weather in Guinea-Bissau and which places have the best travel conditions in this month. See all of Guinea-Bissau in August →
perfect weather
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What to Wear in Bissau in August
Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Bissau in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Guinea-Bissau, check out our Bissau's climate page.
See the full Bissau climate overview or explore weather in Guinea-Bissau.
