Guinea-Bissau climate
World Climates covers 1 place in Guinea-Bissau. Bissau has a tropical savanna (dry winter) climate (Köppen Aw).
Climate of Bissau at a glance
The year average in Bissau is 27 °C80 °F. The warmest month is May, with an average high of 35 °C95 °F. The coldest is January, with an average low of 16 °C62 °F. About 1,556 mm61 in of precipitation falls in a year. August is the wettest month and December the driest. By our comfort score, the best months to visit are November–January.
Frequently asked questions
How many places in Guinea-Bissau does this site cover?
World Climates has climate data for one place in Guinea-Bissau: Bissau. Its page has monthly averages for temperature, rainfall, humidity and daylight.
What is the warmest month in Bissau?
May is the warmest month, with an average high of 35 °C95 °F. January is the coldest, with an average low of 16 °C62 °F.
When does it rain the most in Bissau?
August is the wettest month, with about 487 mm19 in of precipitation. The yearly total is about 1,556 mm61 in.
When is the best time to visit Bissau?
By our comfort score, the most comfortable months are November–January. The score is based on long-term averages, not on a forecast.
Climate of every place in Guinea-Bissau
| Place | Year | Max high | Min low | Precip. |
|---|---|---|---|---|
| Bissau | 27 | 36 | 16 | 1,556 |
Year = annual mean temperature; max high = average high of the warmest month; min low = average low of the coldest month; precip. = annual total. Temperatures in °C°F, precipitation in mminches. Sorted by population.
Data: NASA POWER climatology 2001–2025 (MERRA-2 reanalysis, CERES satellite data) — grid-cell averages, not station records. Sources and method.