Bissau Weather in August
Thinking of visiting Bissau in August? Expect very high temperatures reaching 30°C (86°F) during the day, dropping to 25°C (77°F) at night, and be prepared for the wettest month of the year.
Rainfall in Bissau in August
As part of the rainy season, Bissau sees around 22 days of rain in August, with an average of 461 mm (18 in). Rainy season showers here are typically intense, often clearing quickly but coming down hard while they last.
Temperature in Bissau in August
In August, Bissau sees very high temperatures, with highs of 30°C (86°F). Nights drop to around 25°C (77°F). For most visitors, the main thing to prepare for is the heat during the day. With lows around 25°C (77°F), the nights are warm enough that a sheet is usually all you need for bedding. Even with its milder temperatures compared to the rest of the year, this month stays comfortably warm and inviting.
Sunshine in Bissau in August
The month experiences a moderate amount of sunlight, with 119 hours of sunshine. This provides a nice balance between sunshine and rain.
Average water temperature in August
With water at 27°C (81°F), you can expect warm, pleasant conditions for any water activity. There's no adjustment period — it feels comfortable straight away.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, November and December typically offer the best weather for Bissau.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Mali, check out our Bissau's climate page.
Bissau Temperature in August
Min Temperature
25°C (77°F)
Max Temperature
30°C (86°F)
Water Temperature
27°C (81°F)
Chance of Rain
73%
Precipitation
461 mm (18 in)
Rainy days
22 days
Humidity
85%
Sunshine
119 hours
Percentage Sunshine
31%
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
The extremes listed below come from historical weather data collected in Bissau from 2006 through 2025.
- The hottest August day on record in Bissau reached 33°C (91°F) (August 1, 2008).
- Bissau experienced its chilliest August day on August 8, 2018, reaching only 25°C (77°F).
- The lowest overnight temperature recorded in August was 21°C (70°F) (August 24, 2011).
- The wettest August day on record brought 275 mm (11 in) of precipitation to Bissau (August 1, 2015).
Best Places in Mali in August
Find out more about the weather in Mali and which places have the best travel conditions in this month. See all of Mali in August →
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What to Wear in Bissau in August
Warm temperatures in August make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! The water temperature sits at about 27°C (81°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. 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 Mali, check out our Bissau's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Bissau climate overview or explore weather in Mali.
