Average annual temperature is 24.9 °C
Absolute maximum temperature: 37.5 °C
Absolute minimum temperature: 15.2 °C
Number of sunny days: 102 days
Number of rainy days: 263 days
Look at detailed online map of Siwaia
* Weather data for Siwaia 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) | 35.7 | 36.1 | 37.5 | 34.2 | 32.4 | 30.7 | 31.0 | 30.8 | 30.7 | 31.1 | 31.9 | 34.0 |
| Average daytime temperature (°C) | 33.5 | 34.3 | 33.3 | 32.1 | 30.3 | 28.5 | 28.4 | 27.7 | 28.4 | 28.9 | 29.3 | 31.3 |
| Average temperature (°C) | 25.5 | 27.3 | 26.5 | 26.2 | 25.3 | 24.1 | 23.8 | 23.6 | 23.9 | 24.3 | 24.5 | 24.1 |
| Average night temperature (°C) | 18.2 | 21.0 | 21.5 | 22.4 | 22.3 | 21.8 | 21.4 | 21.5 | 21.5 | 21.5 | 21.3 | 18.3 |
| Absolute minimum temperature (°C) | 15.5 | 17.9 | 19.2 | 21.5 | 21.5 | 20.9 | 19.8 | 20.8 | 20.7 | 20.9 | 19.4 | 15.2 |
| 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 | 11.8 | 12.1 | 12.3 | 12.5 | 12.6 | 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) | 9.9 | 9.9 | 9.2 | 8.4 | 7.4 | 6.7 | 7.7 | 6.0 | 7.2 | 8.0 | 8.5 | 10.1 |
| Precipitation (mm) | 11 | 1 | 69 | 164 | 319 | 264 | 420 | 428 | 372 | 427 | 150 | 4 |
| Sunny days | 27 | 25 | 12 | 4 | 0 | 0 | 0 | 0 | 0 | 1 | 6 | 27 |
| Rainy days | 4 | 3 | 19 | 26 | 31 | 30 | 31 | 31 | 30 | 30 | 24 | 4 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Siwaia is at