Climate averages 1991–2020
Cotonou weather
in July.
A warm, wet month: the 11th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a warm month in Cotonou: daytime highs average 26.4°C and nights cool to about 24.0°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 132 mm of rain on roughly 19 days, which makes July a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 27 min on an average July day.
The nearest other city in this atlas is Godomè (8 km away). In July its highs average 26.7°C, about as warm as Cotonou, with 126 mm of rain.
Among the 8 cities listed in Benin, Cotonou ranks 8th of 8 for the warmest July highs and 2nd of 8 for the driest July (rainfall, lowest first). The mean July high of those 8 cities is 27.5°C; Cotonou is 1.1°C cooler than that mean.
From July to August, average highs fall by 0.3°C to 26.1°C, and monthly rainfall falls from 132 mm to 73 mm.
The annual picture
July in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Cotonou climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.4°C25.3°C | 25.3°C | 21 | 6.5 | 11.812 h |
| February | 29.9°C26.1°C | 26.1°C | 27 | 7.9 | 11.912 h |
| March | 30.1°C26.7°C | 26.7°C | 48 | 12.5 | 12.112 h |
| April | 29.8°C26.6°C | 26.6°C | 73 | 15.7 | 12.312 h |
| May | 29.0°C25.9°C | 25.9°C | 164 | 23.3 | 12.412 h |
| June | 27.5°C24.7°C | 24.7°C | 259 | 26.1 | 12.512 h |
| July, selected | 26.4°C24.0°C | 24.0°C | 132 | 18.9 | 12.512 h |
| August | 26.1°C23.6°C | 23.6°C | 73 | 13.3 | 12.312 h |
| September | 26.7°C24.0°C | 24.0°C | 104 | 18.0 | 12.212 h |
| October | 27.8°C24.7°C | 24.7°C | 110 | 20.2 | 12.012 h |
| November | 28.8°C25.7°C | 25.7°C | 49 | 13.8 | 11.812 h |
| December | 29.3°C25.6°C | 25.6°C | 27 | 7.6 | 11.812 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- Godomè in JulyBenin · 8 kmHigh 26.7°C · Low 23.8°C · 126 mm rain
- Ekpé in JulyBenin · 13 kmHigh 26.6°C · Low 23.9°C · 140 mm rain
- Porto-Novo in JulyBenin · 25 kmHigh 27.1°C · Low 23.5°C · 140 mm rain
- Irewe in JulyNigeria · 80 kmHigh 26.5°C · Low 23.9°C · 192 mm rain
- Alasia in JulyNigeria · 84 kmHigh 26.6°C · Low 23.4°C · 192 mm rain
- Ota in JulyNigeria · 97 kmHigh 27.4°C · Low 22.6°C · 186 mm rain
- Bohicon in JulyBenin · 98 kmHigh 28.4°C · Low 22.3°C · 142 mm rain
- Ifo in JulyNigeria · 99 kmHigh 27.7°C · Low 22.5°C · 186 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Cotonou) is explained once on the Cotonou year overview and on the Sources, method and limits page.