Average annual temperature is 26.6 °C
Absolute maximum temperature: 37.7 °C
Absolute minimum temperature: 18.4 °C
Number of sunny days: 104 days
Number of rainy days: 261 days
Look at detailed online map of Sirian
* Weather data for Sirian 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) | 37.7 | 37.4 | 37.5 | 36.2 | 35.7 | 32.3 | 32.6 | 32.5 | 32.0 | 32.8 | 33.8 | 36.1 |
| Average daytime temperature (°C) | 35.7 | 35.3 | 34.1 | 34.0 | 32.3 | 29.9 | 29.5 | 28.6 | 29.6 | 30.4 | 31.1 | 33.5 |
| Average temperature (°C) | 27.3 | 28.0 | 27.6 | 28.1 | 27.3 | 25.6 | 25.3 | 25.1 | 25.5 | 25.7 | 26.6 | 26.9 |
| Average night temperature (°C) | 22.0 | 23.5 | 23.7 | 24.5 | 24.5 | 23.5 | 23.2 | 23.1 | 23.2 | 23.3 | 23.5 | 22.3 |
| Absolute minimum temperature (°C) | 18.9 | 22.4 | 22.2 | 23.5 | 23.5 | 22.3 | 22.2 | 21.8 | 22.4 | 22.5 | 22.7 | 18.4 |
| 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 | 11.8 | 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) | 9.8 | 9.9 | 9.7 | 9.0 | 7.8 | 6.6 | 7.0 | 5.6 | 6.7 | 6.8 | 8.3 | 9.8 |
| Precipitation (mm) | 3 | 1 | 15 | 88 | 322 | 449 | 524 | 604 | 417 | 410 | 147 | 4 |
| Sunny days | 28 | 23 | 20 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 24 |
| Rainy days | 3 | 5 | 11 | 24 | 31 | 30 | 31 | 31 | 30 | 31 | 27 | 7 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sirian is at