Bissau, Guinea-Bissau Weather
Bissau hourly forecast: next 24 hours
Today's high of 82°F (28°C) is right in line with the typical August high of 83°F (28°C).
Current conditions in detail
Bissau weather tomorrow (Tuesday, August 18)
Tomorrow in Bissau looks light rain shower, with a high of 81° and an overnight low of 77°. There is a 85% chance of rain - plan accordingly. Winds top out near 8 mph, and the UV index reaches 10 (very high).
Bissau 14-day forecast
About the weather in Bissau
Bissau has a tropical wet-and-dry climate, marked by year-round warmth split between a rainy season and a pronounced dry season. Average daytime highs range from about 83°F (28°C) in August to around 88°F (31°C) in June, and the city records roughly 117 days of measurable precipitation a year.
Bissau weather: quick facts
- Hottest month: June - highs near 88°F (31°C)
- Coldest month: August - highs near 83°F (28°C)
- Record high: 105°F (40°C) · Record low: 65°F (18°C) (2015–2024)
- Wettest month: August (29 rainy days) · Sunniest: April (11.7 h sun/day)
- Climate type: tropical wet-and-dry - year-round warmth split between a rainy season and a pronounced dry season
Temperatures through the year
The warmest stretch of the year centers on June. Highs average 88°F (31°C) and overnight lows stay near 78°F (25°C). The coolest month is August, with typical highs of 83°F (28°C) and lows around 76°F (25°C). Based on 2015–2024 weather data, temperatures have reached as high as 105°F (40°C) and dropped as low as 65°F (18°C).
Rain, sun and snow
August is usually the wettest month. It brings about 19.9 inches (506 mm) of rain over 29 days, while January is the driest. April brings the most sunshine, averaging 11.7 hours of sun a day.
Season by season
March through May
March through May in Bissau brings hot afternoons, with daytime highs averaging 91°F (33°C) and nights around 74°F (23°C); precipitation is infrequent.
June through August
June through August in Bissau runs hot, with daytime highs averaging 85°F (29°C) and nights around 77°F (25°C); expect showers on roughly 66 days across the season.
September through November
September through November in Bissau is hot, with daytime highs averaging 87°F (30°C) and nights around 76°F (25°C); expect showers on roughly 50 days across the season.
December through February
December through February in Bissau brings serious heat, with daytime highs averaging 92°F (33°C) and nights around 71°F (22°C); precipitation is infrequent.
Average temperatures in Bissau by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 91° | 70° | 0 | 0.0 in | 10.5 h/day | 43% |
| February | 93° | 71° | 0 | 0.0 in | 10.8 h/day | 44% |
| March | 93° | 73° | 0 | 0.0 in | 11.2 h/day | 52% |
| April | 91° | 74° | 0 | 0.0 in | 11.7 h/day | 60% |
| May | 90° | 75° | 1 | 0.1 in | 11.2 h/day | 66% |
| June | 88° | 78° | 10 | 2.4 in | 10.2 h/day | 76% |
| July | 83° | 77° | 28 | 16.5 in | 7.8 h/day | 85% |
| August | 83° | 76° | 29 | 19.9 in | 7.5 h/day | 87% |
| September | 84° | 76° | 26 | 13.2 in | 8.2 h/day | 87% |
| October | 87° | 77° | 20 | 5.7 in | 9.7 h/day | 85% |
| November | 89° | 75° | 4 | 0.7 in | 10.4 h/day | 72% |
| December | 91° | 71° | 0 | 0.0 in | 10.1 h/day | 49% |