Average annual temperature is 28.1 °C
Absolute maximum temperature: 42.8 °C
Absolute minimum temperature: 11.5 °C
Number of sunny days: 293 days
Number of rainy days: 72 days
Look at detailed online map of Koso
* Weather data for Koso 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) | 35.5 | 36.8 | 39.1 | 41.2 | 42.8 | 40.5 | 37.3 | 34.1 | 39.0 | 38.5 | 36.4 | 34.3 |
| Average daytime temperature (°C) | 29.3 | 31.8 | 36.5 | 38.6 | 39.6 | 36.4 | 34.7 | 31.3 | 34.5 | 36.6 | 34.6 | 29.2 |
| Average temperature (°C) | 21.8 | 24.4 | 29.3 | 32.0 | 33.7 | 30.8 | 29.3 | 27.0 | 29.0 | 30.3 | 27.8 | 21.6 |
| Average night temperature (°C) | 14.8 | 17.3 | 22.3 | 25.3 | 27.6 | 25.5 | 24.5 | 23.2 | 24.2 | 23.7 | 21.1 | 14.5 |
| Absolute minimum temperature (°C) | 11.5 | 14.0 | 19.0 | 20.8 | 25.4 | 22.7 | 22.2 | 21.5 | 22.4 | 20.7 | 17.5 | 11.5 |
| 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) | 10.3 | 10.3 | 10.1 | 10.5 | 10.6 | 10.7 | 10.2 | 9.1 | 10.5 | 10.2 | 10.5 | 10.4 |
| Precipitation (mm) | 0 | 0 | 3 | 1 | 1 | 27 | 50 | 98 | 39 | 0 | 0 | 0 |
| Sunny days | 31 | 28 | 30 | 28 | 28 | 20 | 10 | 10 | 17 | 30 | 30 | 31 |
| Rainy days | 0 | 0 | 1 | 2 | 3 | 10 | 21 | 21 | 13 | 1 | 0 | 0 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Koso is at