Average annual temperature is 25.5 °C
Absolute maximum temperature: 36.5 °C
Absolute minimum temperature: 15.5 °C
Number of sunny days: 87 days
Number of rainy days: 278 days
Look at detailed online map of Grilahun
* Weather data for Grilahun 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) | 36.1 | 36.0 | 36.5 | 34.1 | 33.5 | 31.7 | 31.5 | 31.6 | 31.8 | 31.4 | 31.6 | 34.0 |
| Average daytime temperature (°C) | 33.4 | 34.3 | 32.6 | 32.2 | 31.3 | 29.4 | 29.2 | 28.6 | 29.1 | 29.5 | 30.0 | 31.8 |
| Average temperature (°C) | 25.6 | 27.7 | 26.5 | 26.7 | 26.2 | 24.9 | 24.6 | 24.4 | 24.6 | 24.9 | 25.3 | 25.1 |
| Average night temperature (°C) | 19.5 | 22.6 | 22.5 | 23.5 | 23.3 | 22.7 | 22.3 | 22.3 | 22.4 | 22.4 | 22.5 | 19.8 |
| Absolute minimum temperature (°C) | 15.9 | 20.8 | 20.9 | 21.8 | 22.2 | 21.6 | 20.9 | 21.3 | 21.6 | 21.8 | 20.7 | 15.5 |
| 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) | 11.7 | 11.9 | 12.1 | 12.3 | 12.5 | 12.6 | 12.5 | 12.4 | 12.2 | 11.9 | 11.8 | 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) | 9.6 | 9.7 | 8.6 | 8.8 | 7.7 | 7.5 | 7.3 | 5.9 | 7.3 | 7.9 | 8.4 | 9.9 |
| Precipitation (mm) | 13 | 3 | 82 | 190 | 323 | 256 | 397 | 403 | 365 | 391 | 206 | 2 |
| Sunny days | 23 | 24 | 14 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 22 |
| Rainy days | 8 | 4 | 17 | 28 | 31 | 30 | 31 | 31 | 30 | 31 | 28 | 9 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Grilahun is at