Average annual temperature is 28.0 °C
Absolute maximum temperature: 41.7 °C
Absolute minimum temperature: 11.6 °C
Number of sunny days: 296 days
Number of rainy days: 69 days
Look at detailed online map of Illi
* Weather data for Illi 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) | 36.3 | 37.9 | 40.5 | 41.7 | 41.0 | 39.7 | 37.4 | 33.5 | 35.5 | 38.2 | 37.0 | 35.2 |
| Average daytime temperature (°C) | 30.6 | 32.9 | 37.2 | 39.2 | 39.4 | 35.3 | 33.2 | 31.1 | 32.9 | 36.3 | 35.2 | 30.3 |
| Average temperature (°C) | 22.5 | 24.9 | 29.6 | 32.2 | 33.4 | 30.3 | 28.6 | 26.8 | 28.0 | 29.2 | 27.9 | 22.3 |
| Average night temperature (°C) | 14.8 | 17.4 | 22.0 | 25.0 | 26.9 | 25.6 | 24.6 | 23.5 | 23.9 | 22.5 | 20.7 | 14.9 |
| Absolute minimum temperature (°C) | 12.1 | 15.2 | 19.0 | 20.7 | 21.5 | 22.8 | 22.9 | 21.7 | 22.2 | 18.2 | 16.0 | 11.6 |
| 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 | 12.4 | 12.8 | 12.9 | 12.8 | 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) | 10.5 | 10.5 | 9.9 | 10.6 | 10.6 | 10.4 | 10.1 | 9.0 | 10.2 | 10.4 | 10.3 | 10.5 |
| Precipitation (mm) | 0 | 0 | 1 | 0 | 1 | 35 | 48 | 94 | 47 | 3 | 0 | 0 |
| Sunny days | 31 | 28 | 29 | 30 | 30 | 20 | 16 | 11 | 10 | 30 | 30 | 31 |
| Rainy days | 0 | 0 | 2 | 0 | 1 | 10 | 15 | 20 | 20 | 1 | 0 | 0 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Illi is at