Cotonou Climate by Month
Cotonou, Littoral, Benin
Warm all year, with rain spread through the year.
Warm all year, with rain spread through the year: that's Cotonou's climate in short. March is the warmest month, with highs around 92°F (33°C); August is the coolest at 83°F (29°C), and nights dip to 74°F (23°C). It gets 43 in (1102 mm) of rain a year, spread across the months. The air is humid, averaging 81% relative humidity.
- Warmest month
- 92°F(33°C)
- Average high, March
- Coldest nights
- 74°F(23°C)
- Average low, August
- Rain per year
- 43 in(1102 mm)
- No clear rainy season
- Humidity
- 81%
- Sunniest: March
Best and worst months in Cotonou
Best for weatherThe most comfortable weather comes in January, August and December, with highs around 88°F (31°C) and about 1.0 in (26 mm) of rain a month.
Least pleasantJune is the least pleasant month: it's the wettest, with 11 in (275 mm) of rain.
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in August.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Cotonou weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuaryBest | 90°F(32°C) | 75°F(24°C) | 0.4 in(10 mm) | 74% | 4.8 |
| FebFebruary | 91°F(33°C) | 77°F(25°C) | 0.9 in(22 mm) | 77% | 5.2 |
| MarMarch | 92°F(33°C) | 78°F(26°C) | 2.0 in(50 mm) | 78% | 5.5 |
| AprApril | 91°F(33°C) | 78°F(25°C) | 3.7 in(93 mm) | 80% | 5.4 |
| MayMay | 90°F(32°C) | 77°F(25°C) | 6.7 in(170 mm) | 82% | 5.1 |
| JunJune | 87°F(30°C) | 75°F(24°C) | 11 in(275 mm) | 84% | 4.1 |
| JulJuly | 84°F(29°C) | 74°F(23°C) | 4.1 in(105 mm) | 85% | 4.1 |
| AugAugustBest | 83°F(29°C) | 74°F(23°C) | 2.2 in(57 mm) | 87% | 4.1 |
| SepSeptember | 85°F(30°C) | 74°F(23°C) | 5.2 in(133 mm) | 84% | 4.0 |
| OctOctober | 88°F(31°C) | 75°F(24°C) | 5.5 in(140 mm) | 85% | 4.8 |
| NovNovember | 90°F(32°C) | 76°F(25°C) | 1.4 in(36 mm) | 82% | 5.0 |
| DecDecemberBest | 90°F(32°C) | 76°F(24°C) | 0.4 in(11 mm) | 78% | 4.7 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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