Cotonou weather in August
August in Cotonou: hot, rainy, with clean air — one of the best months to visit.
#1 of 12 months in Cotonou · #427 of 604 destinations to visit in August · comfort 69/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Cotonou climate normals — August
| Daytime high | 27°C / 80°F | 🥵 hot |
|---|---|---|
| Nighttime low | 24°C / 75°F | |
| Feels like (high) | 30°C / 86°F | |
| Rainfall | 128 mm / 5 in | 🌧 rainy |
| Rainy days | 17 days | |
| Humidity | 86% | 💦 very humid |
| Dew point | 23°C / 73°F | |
| Sunshine | 9.4 h/day | |
| Daylight | 12.3 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 37 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Cotonou in August — FAQ
- Is August a good time to visit Cotonou?
- August in Cotonou: hot, rainy, with clean air — one of the best months to visit. It ranks #1 of 12 months for Cotonou on SeasonMap's comfort score (69/100).
- What is the weather like in Cotonou in August?
- In August, Cotonou averages a daily high of 26.6°C and a low of 23.9°C, with about 128.1 mm of rain over roughly 17.4 rainy days.
- What is the air quality in Cotonou in August?
- Cotonou has a mean US Air Quality Index of about 37 in August.