Average annual temperature is 28.5 °C
Absolute maximum temperature: 42.8 °C
Absolute minimum temperature: 16.8 °C
Number of sunny days: 214 days
Number of rainy days: 151 days
Look at detailed online map of Koullo
* Weather data for Koullo Chad is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 40.3 | 40.7 | 42.0 | 42.8 | 41.3 | 36.5 | 33.6 | 33.0 | 33.3 | 34.9 | 37.5 | 37.3 |
| Average daytime temperature (°C) | 35.6 | 37.6 | 38.8 | 40.1 | 38.6 | 32.6 | 31.1 | 29.6 | 30.5 | 32.7 | 34.4 | 35.1 |
| Average temperature (°C) | 27.4 | 29.4 | 31.5 | 33.7 | 32.4 | 27.4 | 26.8 | 25.7 | 26.2 | 27.2 | 28.0 | 27.0 |
| Average night temperature (°C) | 19.6 | 21.9 | 24.5 | 27.8 | 27.3 | 23.8 | 23.6 | 22.8 | 22.7 | 22.7 | 22.4 | 19.5 |
| Absolute minimum temperature (°C) | 17.8 | 19.0 | 21.2 | 24.2 | 23.7 | 22.1 | 22.2 | 21.7 | 20.8 | 21.4 | 19.1 | 16.8 |
| 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) | 11.6 | 11.8 | 12.1 | 12.3 | 12.6 | 12.7 | 12.6 | 12.4 | 12.2 | 11.9 | 11.7 | 11.6 |
| 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 | 10.7 | 9.9 | 9.9 | 9.9 | 8.8 | 8.4 | 8.1 | 9.1 | 10.3 | 10.3 | 10.5 |
| Precipitation (mm) | 0 | 0 | 18 | 10 | 37 | 157 | 170 | 255 | 94 | 47 | 10 | 0 |
| Sunny days | 31 | 28 | 27 | 25 | 15 | 4 | 4 | 2 | 7 | 18 | 22 | 31 |
| Rainy days | 0 | 0 | 4 | 5 | 16 | 26 | 27 | 29 | 23 | 13 | 8 | 0 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Koullo is at