Average annual temperature is 29.1 °C
Absolute maximum temperature: 42.4 °C
Absolute minimum temperature: 17.1 °C
Number of sunny days: 201 days
Number of rainy days: 164 days
Look at detailed online map of Siénou
* Weather data for Siénou 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) | 38.4 | 40.2 | 42.1 | 42.4 | 39.8 | 36.3 | 34.6 | 32.7 | 34.9 | 37.2 | 38.5 | 38.9 |
| Average daytime temperature (°C) | 35.7 | 38.1 | 38.9 | 38.8 | 36.2 | 33.3 | 32.2 | 30.2 | 31.1 | 33.6 | 36.6 | 36.2 |
| Average temperature (°C) | 27.6 | 30.2 | 31.8 | 32.6 | 30.8 | 28.8 | 27.7 | 26.2 | 26.9 | 28.3 | 30.1 | 28.0 |
| Average night temperature (°C) | 20.3 | 23.1 | 25.5 | 27.3 | 26.4 | 24.9 | 24.3 | 23.5 | 23.6 | 23.9 | 23.9 | 20.7 |
| Absolute minimum temperature (°C) | 17.1 | 21.0 | 22.3 | 25.0 | 24.3 | 22.8 | 23.1 | 22.4 | 22.2 | 21.8 | 20.3 | 18.7 |
| 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) | 11.6 | 11.8 | 12.1 | 12.4 | 12.6 | 12.7 | 12.7 | 12.5 | 12.2 | 11.9 | 11.6 | 11.5 |
| 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) | 10.1 | 10.0 | 9.6 | 9.5 | 9.9 | 9.5 | 8.6 | 7.5 | 8.5 | 9.9 | 10.6 | 10.2 |
| Precipitation (mm) | 0 | 0 | 8 | 11 | 34 | 81 | 139 | 227 | 114 | 38 | 8 | 0 |
| Sunny days | 31 | 28 | 25 | 21 | 12 | 3 | 5 | 1 | 1 | 18 | 25 | 31 |
| Rainy days | 0 | 0 | 6 | 9 | 19 | 27 | 26 | 30 | 29 | 13 | 5 | 0 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Siénou is at