Average annual temperature is 25.5 °C
Absolute maximum temperature: 38.4 °C
Absolute minimum temperature: 16.2 °C
Number of sunny days: 80 days
Number of rainy days: 285 days
Look at detailed online map of Biama
* Weather data for Biama 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) | 36.5 | 37.5 | 38.4 | 35.1 | 34.6 | 32.5 | 32.2 | 32.7 | 32.7 | 31.9 | 32.1 | 35.4 |
| Average daytime temperature (°C) | 34.6 | 35.8 | 34.1 | 33.1 | 31.6 | 29.6 | 29.2 | 28.7 | 29.1 | 29.6 | 30.2 | 32.9 |
| Average temperature (°C) | 26.2 | 27.8 | 26.8 | 26.6 | 25.9 | 24.7 | 24.4 | 24.2 | 24.5 | 24.8 | 25.3 | 25.6 |
| Average night temperature (°C) | 20.4 | 22.4 | 22.4 | 23.2 | 23.1 | 22.4 | 22.2 | 22.2 | 22.2 | 22.4 | 22.5 | 20.6 |
| Absolute minimum temperature (°C) | 16.2 | 21.0 | 20.3 | 22.2 | 22.3 | 21.4 | 20.7 | 20.9 | 21.0 | 21.4 | 21.7 | 16.8 |
| 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 | 12.0 | 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) | 9.7 | 9.7 | 8.2 | 8.0 | 7.4 | 7.1 | 6.5 | 5.3 | 6.5 | 7.2 | 8.0 | 9.7 |
| Precipitation (mm) | 9 | 5 | 75 | 193 | 335 | 286 | 376 | 643 | 414 | 340 | 179 | 6 |
| Sunny days | 25 | 19 | 11 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 21 |
| Rainy days | 6 | 9 | 20 | 29 | 30 | 30 | 31 | 31 | 30 | 31 | 28 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Biama is at