Average annual temperature is 25.8 °C
Absolute maximum temperature: 37.7 °C
Absolute minimum temperature: 15.5 °C
Number of sunny days: 93 days
Number of rainy days: 272 days
Look at detailed online map of Niahun
* Weather data for Niahun 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) | 36.3 | 36.7 | 37.7 | 35.0 | 34.2 | 32.1 | 31.8 | 32.3 | 31.7 | 31.3 | 31.9 | 34.7 |
| Average daytime temperature (°C) | 33.9 | 35.0 | 33.1 | 32.7 | 31.6 | 29.7 | 29.6 | 29.0 | 29.4 | 29.8 | 30.4 | 32.4 |
| Average temperature (°C) | 25.9 | 28.1 | 26.9 | 27.0 | 26.5 | 25.1 | 24.9 | 24.7 | 24.9 | 25.2 | 25.6 | 25.3 |
| Average night temperature (°C) | 19.0 | 22.6 | 22.6 | 23.6 | 23.5 | 22.8 | 22.5 | 22.6 | 22.6 | 22.7 | 22.5 | 19.5 |
| Absolute minimum temperature (°C) | 16.2 | 20.8 | 20.3 | 22.2 | 22.5 | 22.1 | 21.2 | 21.4 | 21.7 | 22.0 | 20.8 | 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 | 9.9 | 8.6 | 8.7 | 7.7 | 7.1 | 7.4 | 5.9 | 7.2 | 7.7 | 8.5 | 10.0 |
| Precipitation (mm) | 19 | 0 | 71 | 211 | 363 | 262 | 411 | 449 | 335 | 387 | 187 | 2 |
| Sunny days | 26 | 26 | 13 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 23 |
| Rainy days | 5 | 2 | 18 | 28 | 31 | 30 | 31 | 31 | 30 | 31 | 27 | 8 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Niahun is at