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Cotonou Weather by Month
Average temperatures, rainfall and humidity for Cotonou, Benin, month by month, built from OpenWeather's historical records. Use it to see what a typical Cotonou month looks like before you travel — then check the live Cotonou forecast for the days ahead.
Warmest month
February
32°C average high
Coolest month
August
24°C average low
Wettest month
June
76 mm of rain
Driest month
December
7 mm of rain
Average temperature and rainfall in Cotonou by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 32°C | 25°C | 15°C / 36°C | 7 mm | 76% | 13 km/h |
| February | 32°C | 26°C | 18°C / 37°C | 11 mm | 79% | 14 km/h |
| March | 32°C | 27°C | 21°C / 36°C | 23 mm | 79% | 17 km/h |
| April | 32°C | 26°C | 22°C / 36°C | 19 mm | 78% | 15 km/h |
| May | 31°C | 26°C | 22°C / 37°C | 38 mm | 80% | 14 km/h |
| June | 29°C | 25°C | 21°C / 33°C | 76 mm | 84% | 15 km/h |
| July | 28°C | 24°C | 21°C / 31°C | 55 mm | 85% | 18 km/h |
| August | 27°C | 24°C | 21°C / 30°C | 37 mm | 86% | 18 km/h |
| September | 28°C | 24°C | 21°C / 31°C | 70 mm | 87% | 16 km/h |
| October | 30°C | 25°C | 22°C / 33°C | 48 mm | 84% | 13 km/h |
| November | 31°C | 26°C | 22°C / 35°C | 30 mm | 81% | 12 km/h |
| December | 32°C | 25°C | 19°C / 35°C | 7 mm | 76% | 12 km/h |
Best time to visit Cotonou
The most comfortable time to visit Cotonou is generally January and July to August, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around June, totalling about 421 mm a year.
Travellers who prefer heat should aim for February, when highs average 32°C. June is the month to avoid if rain would spoil your plans — it averages 76 mm, roughly 10× the rainfall of December.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Cotonou forecast for what is happening now.