Climate averages 1991–2020
Bissau weather
in January.
A hot, very dry month: the 5th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a hot month in Bissau: daytime highs average 32.9°C and nights cool to about 20.5°C. By daytime temperature it is the 5th warmest of the 12 months.
Rain is very rare: less than 1 mm falls in a typical January (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 31 min on an average January day.
The nearest other city in this atlas is Ziguinchor (107 km away). In January its highs average 33.4°C, about as warm as Bissau, with almost no rain (under 1 mm).
From January to February, average highs rise by 1.5°C to 34.4°C, and monthly rainfall stays under 1 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Bissau climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 32.9°C20.5°C | 20.5°C | 0.3 | 0.1 | 11.512 h |
| February | 34.4°C21.2°C | 21.2°C | 0.8 | 0.1 | 11.712 h |
| March | 35.2°C22.4°C | 22.4°C | 0 | 0.0 | 12.112 h |
| April | 34.8°C23.2°C | 23.2°C | 0 | 0.0 | 12.412 h |
| May | 33.8°C24.2°C | 24.2°C | 6.1 | 1.3 | 12.713 h |
| June | 31.7°C25.3°C | 25.3°C | 87 | 12.0 | 12.813 h |
| July | 28.9°C24.6°C | 24.6°C | 352 | 27.8 | 12.713 h |
| August | 28.3°C24.3°C | 24.3°C | 452 | 29.3 | 12.513 h |
| September | 29.1°C24.4°C | 24.4°C | 307 | 27.7 | 12.212 h |
| October | 30.3°C25.0°C | 25.0°C | 142 | 21.9 | 11.912 h |
| November | 31.9°C24.3°C | 24.3°C | 23 | 4.6 | 11.612 h |
| December | 32.8°C21.6°C | 21.6°C | 1.9 | 0.3 | 11.411 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Ziguinchor in JanuarySenegal · 107 kmHigh 33.4°C · Low 18.8°C · 0.7 mm rain
- Kolda in JanuarySenegal · 135 kmHigh 33.8°C · Low 19.3°C · 0.2 mm rain
- Kamsar in JanuaryGuinea · 172 kmHigh 31.2°C · Low 21.7°C · 0.4 mm rain
- Brikama in JanuaryGambia · 194 kmHigh 30.6°C · Low 19.7°C · 1.2 mm rain
- Banjul in JanuaryGambia · 206 kmHigh 30.0°C · Low 20.0°C · 1.6 mm rain
- Serekunda in JanuaryGambia · 211 kmHigh 28.5°C · Low 20.2°C · 1.5 mm rain
- Kaolack in JanuarySenegal · 260 kmHigh 32.1°C · Low 18.0°C · 2.3 mm rain
- Tambacounda in JanuarySenegal · 298 kmHigh 34.5°C · Low 20.1°C · 0.1 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Bissau) is explained once on the Bissau year overview and on the Sources, method and limits page.