Cotonou weather in August
August is a fair month to visit Cotonou: highs of 27°C (80°F) and about 93 mm (3.7 in) of rain on average. Nights average 23°C (73°F) and cloud cover 73% (NASA POWER, 2001–2025 averages). The sea averages 25°C (77°F). It is the 6th driest month of the year and the coolest. Compared with July, it is about as warm and drier; September brings highs of 27°C (81°F) and 198 mm (7.8 in) of rain.
Is August a good time to visit Cotonou?
fair month Weather score 70/100.
August is a fair month in Cotonou. The weather is usually best in Nov–Feb.
Does it rain a lot in Cotonou in August?
Some rain is normal: about 93 mm (3.7 in) falls in an average August. It is the 6th driest month of the year.
How warm is Cotonou in August?
Days average 27°C (80°F) and nights 23°C (73°F).
Cotonou weather by month
| Month | High | Low | Rain | Cloud | Sea | Weather |
|---|---|---|---|---|---|---|
| January | 30°C (86°F) | 23°C (74°F) | 20 mm | 37% | 29°C (84°F) | best |
| February | 30°C (86°F) | 25°C (77°F) | 32 mm | 51% | 28°C (83°F) | best |
| March | 30°C (86°F) | 26°C (78°F) | 78 mm | 68% | 29°C (84°F) | fair |
| April | 29°C (85°F) | 26°C (78°F) | 119 mm | 73% | 30°C (86°F) | fair |
| May | 29°C (84°F) | 25°C (78°F) | 174 mm | 74% | 30°C (86°F) | least pleasant |
| June | 28°C (82°F) | 24°C (76°F) | 216 mm | 77% | 29°C (84°F) | least pleasant |
| July | 27°C (80°F) | 23°C (74°F) | 165 mm | 78% | 26°C (79°F) | least pleasant |
| August | 27°C (80°F) | 23°C (73°F) | 93 mm | 73% | 25°C (77°F) | fair |
| September | 27°C (81°F) | 23°C (74°F) | 198 mm | 76% | 26°C (79°F) | least pleasant |
| October | 28°C (82°F) | 24°C (75°F) | 172 mm | 68% | 28°C (82°F) | least pleasant |
| November | 29°C (84°F) | 25°C (76°F) | 55 mm | 50% | 29°C (85°F) | best |
| December | 30°C (85°F) | 24°C (75°F) | 20 mm | 35% | 29°C (84°F) | best |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine. Page updated . How we rate months