Average annual temperature is 27.5 °C
Absolute maximum temperature: 39.6 °C
Absolute minimum temperature: 19.8 °C
Number of sunny days: 96 days
Number of rainy days: 269 days
Look at detailed online map of Illémon
* Weather data for Illémon Benin is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 37.5 | 39.6 | 38.7 | 36.5 | 35.1 | 34.5 | 32.4 | 32.5 | 32.9 | 33.7 | 35.5 | 38.5 |
| Average daytime temperature (°C) | 36.1 | 37.8 | 35.5 | 34.0 | 33.5 | 31.2 | 30.4 | 30.2 | 30.4 | 31.8 | 33.6 | 36.3 |
| Average temperature (°C) | 28.5 | 29.7 | 28.7 | 28.4 | 27.9 | 26.2 | 25.9 | 25.8 | 25.8 | 26.6 | 27.7 | 28.7 |
| Average night temperature (°C) | 23.3 | 25.0 | 24.8 | 25.0 | 24.7 | 23.6 | 23.4 | 23.1 | 23.0 | 23.7 | 24.1 | 23.2 |
| Absolute minimum temperature (°C) | 19.8 | 22.2 | 23.2 | 23.7 | 23.3 | 22.4 | 22.5 | 22.1 | 21.5 | 22.3 | 22.5 | 20.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.8 | 11.9 | 12.1 | 12.3 | 12.4 | 12.5 | 12.5 | 12.3 | 12.2 | 12.0 | 11.8 | 11.7 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 9.5 | 9.7 | 8.0 | 8.0 | 8.5 | 7.3 | 8.1 | 7.4 | 7.3 | 8.3 | 9.5 | 10.2 |
| Precipitation (mm) | 7 | 7 | 91 | 85 | 137 | 172 | 186 | 176 | 176 | 118 | 21 | 3 |
| Sunny days | 24 | 19 | 6 | 4 | 2 | 4 | 0 | 1 | 2 | 0 | 9 | 25 |
| Rainy days | 7 | 9 | 25 | 26 | 29 | 26 | 31 | 30 | 28 | 31 | 21 | 6 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Illémon is at