Average annual temperature is 24.4 °C
Absolute maximum temperature: 35.8 °C
Absolute minimum temperature: 15.0 °C
Number of sunny days: 87 days
Number of rainy days: 278 days
Look at detailed online map of Kosima
* Weather data for Kosima Sierra Leone is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 34.6 | 35.8 | 35.6 | 33.0 | 33.1 | 30.5 | 30.4 | 30.4 | 30.3 | 30.6 | 31.7 | 34.1 |
| Average daytime temperature (°C) | 32.3 | 32.9 | 31.5 | 31.0 | 30.2 | 28.1 | 28.0 | 27.5 | 28.2 | 28.6 | 29.0 | 31.1 |
| Average temperature (°C) | 24.7 | 26.6 | 25.6 | 25.5 | 25.1 | 23.6 | 23.4 | 23.3 | 23.6 | 23.9 | 24.2 | 24.2 |
| Average night temperature (°C) | 18.3 | 21.3 | 21.6 | 22.2 | 22.1 | 21.3 | 21.1 | 21.2 | 21.2 | 21.2 | 21.2 | 18.7 |
| Absolute minimum temperature (°C) | 15.0 | 19.9 | 19.4 | 20.8 | 21.1 | 20.5 | 19.7 | 19.9 | 20.6 | 20.3 | 19.6 | 15.4 |
| 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) | 11.7 | 11.9 | 12.1 | 12.3 | 12.5 | 12.6 | 12.5 | 12.4 | 12.2 | 11.9 | 11.7 | 11.7 |
| 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 | 9.7 | 8.6 | 8.6 | 7.5 | 6.4 | 6.8 | 5.7 | 7.5 | 7.7 | 8.3 | 10.0 |
| Precipitation (mm) | 63 | 4 | 77 | 177 | 269 | 283 | 377 | 458 | 296 | 349 | 134 | 1 |
| Sunny days | 24 | 23 | 10 | 2 | 0 | 0 | 0 | 1 | 0 | 1 | 3 | 23 |
| Rainy days | 7 | 5 | 21 | 28 | 31 | 30 | 31 | 30 | 30 | 30 | 27 | 8 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Kosima is at