Average annual temperature is 30.1 °C
Absolute maximum temperature: 43.8 °C
Absolute minimum temperature: 13.1 °C
Number of sunny days: 304 days
Number of rainy days: 61 days
Look at detailed online map of Séwan
* Weather data for Séwan Niger is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 36.8 | 38.6 | 40.6 | 42.4 | 43.8 | 42.4 | 40.3 | 37.4 | 42.0 | 40.4 | 38.7 | 37.7 |
| Average daytime temperature (°C) | 31.6 | 35.1 | 38.8 | 40.2 | 41.4 | 38.4 | 36.0 | 33.7 | 36.7 | 38.7 | 37.2 | 32.0 |
| Average temperature (°C) | 23.8 | 27.3 | 31.4 | 33.5 | 35.5 | 33.1 | 31.0 | 28.8 | 31.2 | 32.2 | 29.8 | 24.1 |
| Average night temperature (°C) | 16.4 | 19.9 | 23.5 | 26.1 | 29.3 | 28.0 | 26.2 | 24.6 | 25.9 | 25.0 | 22.0 | 16.6 |
| Absolute minimum temperature (°C) | 13.6 | 17.3 | 19.5 | 21.9 | 26.2 | 23.8 | 23.8 | 22.6 | 23.3 | 20.5 | 19.2 | 13.1 |
| 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) | 11.4 | 11.7 | 12.1 | 12.5 | 12.8 | 13.0 | 12.9 | 12.6 | 12.2 | 11.8 | 11.5 | 11.3 |
| 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) | 10.0 | 10.2 | 9.7 | 10.6 | 10.6 | 10.3 | 9.9 | 9.7 | 10.3 | 10.4 | 10.5 | 10.2 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 0 | 19 | 48 | 121 | 47 | 0 | 0 | 0 |
| Sunny days | 31 | 28 | 31 | 30 | 28 | 24 | 16 | 9 | 17 | 29 | 30 | 31 |
| Rainy days | 0 | 0 | 0 | 0 | 3 | 6 | 15 | 22 | 13 | 2 | 0 | 0 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Séwan is at