Average annual temperature is 25.8 °C
Absolute maximum temperature: 36.8 °C
Absolute minimum temperature: 15.1 °C
Number of sunny days: 82 days
Number of rainy days: 283 days
Look at detailed online map of Siama
* Weather data for Siama 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) | 36.8 | 36.3 | 36.7 | 34.4 | 34.3 | 32.0 | 32.0 | 32.1 | 31.7 | 31.8 | 32.6 | 34.9 |
| Average daytime temperature (°C) | 34.1 | 34.5 | 32.8 | 32.4 | 31.6 | 29.7 | 29.6 | 28.9 | 29.5 | 29.9 | 30.3 | 32.2 |
| Average temperature (°C) | 25.9 | 28.0 | 26.9 | 26.9 | 26.4 | 25.1 | 24.9 | 24.7 | 24.9 | 25.2 | 25.6 | 25.3 |
| Average night temperature (°C) | 19.5 | 22.8 | 22.8 | 23.6 | 23.4 | 22.7 | 22.6 | 22.5 | 22.7 | 22.7 | 22.6 | 19.8 |
| Absolute minimum temperature (°C) | 15.1 | 20.9 | 20.4 | 22.1 | 22.5 | 21.8 | 21.4 | 20.9 | 21.8 | 21.8 | 20.9 | 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) | 9.8 | 9.6 | 8.5 | 8.5 | 7.4 | 7.1 | 7.2 | 5.5 | 6.8 | 7.8 | 8.3 | 9.9 |
| Precipitation (mm) | 17 | 5 | 83 | 166 | 343 | 270 | 379 | 421 | 337 | 359 | 180 | 3 |
| Sunny days | 22 | 23 | 12 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 22 |
| Rainy days | 9 | 5 | 19 | 29 | 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 Siama is at