Average annual temperature is 25.9 °C
Absolute maximum temperature: 39.5 °C
Absolute minimum temperature: 17.1 °C
Number of sunny days: 90 days
Number of rainy days: 275 days
Look at detailed online map of Nyanyama
* Weather data for Nyanyama 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) | 37.1 | 37.7 | 39.5 | 35.3 | 34.3 | 33.4 | 32.4 | 32.9 | 32.3 | 31.6 | 32.9 | 35.9 |
| Average daytime temperature (°C) | 35.3 | 36.3 | 34.3 | 33.1 | 32.0 | 29.8 | 29.6 | 28.6 | 29.4 | 29.7 | 30.5 | 33.2 |
| Average temperature (°C) | 26.8 | 28.4 | 27.2 | 26.8 | 26.3 | 24.9 | 24.5 | 24.3 | 24.6 | 25.0 | 25.6 | 26.1 |
| Average night temperature (°C) | 20.7 | 22.6 | 22.6 | 23.3 | 23.3 | 22.5 | 22.3 | 22.4 | 22.4 | 22.6 | 22.7 | 20.8 |
| Absolute minimum temperature (°C) | 17.2 | 21.5 | 20.7 | 22.1 | 22.4 | 20.9 | 21.4 | 21.4 | 21.5 | 21.6 | 21.4 | 17.1 |
| 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) | 9.9 | 9.9 | 8.7 | 8.6 | 7.7 | 6.9 | 6.7 | 5.3 | 6.6 | 7.4 | 8.1 | 10.0 |
| Precipitation (mm) | 2 | 4 | 85 | 178 | 305 | 325 | 365 | 583 | 345 | 420 | 143 | 5 |
| Sunny days | 25 | 22 | 12 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 25 |
| Rainy days | 6 | 6 | 19 | 27 | 31 | 30 | 31 | 31 | 30 | 31 | 27 | 6 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Nyanyama is at