Average annual temperature is 26.1 °C
Absolute maximum temperature: 38.3 °C
Absolute minimum temperature: 17.0 °C
Number of sunny days: 101 days
Number of rainy days: 264 days
Look at detailed online map of Mamonso
* Weather data for Mamonso 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) | 36.6 | 37.8 | 38.3 | 36.8 | 36.1 | 33.2 | 32.8 | 33.2 | 32.8 | 32.8 | 33.3 | 36.0 |
| Average daytime temperature (°C) | 35.1 | 36.6 | 35.1 | 34.9 | 32.9 | 30.4 | 29.6 | 28.5 | 29.7 | 30.2 | 31.2 | 33.3 |
| Average temperature (°C) | 26.8 | 28.2 | 27.4 | 27.7 | 26.8 | 25.1 | 24.8 | 24.5 | 24.9 | 25.2 | 26.1 | 26.3 |
| Average night temperature (°C) | 20.7 | 22.4 | 22.7 | 23.5 | 23.6 | 22.8 | 22.5 | 22.4 | 22.4 | 22.8 | 22.9 | 21.3 |
| Absolute minimum temperature (°C) | 17.0 | 20.9 | 20.7 | 22.3 | 23.0 | 21.7 | 21.5 | 21.4 | 21.4 | 22.1 | 22.1 | 17.8 |
| 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 | 11.8 | 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) | 9.7 | 9.8 | 9.3 | 8.8 | 7.5 | 6.6 | 7.3 | 5.9 | 6.7 | 7.0 | 8.5 | 9.9 |
| Precipitation (mm) | 2 | 1 | 59 | 131 | 330 | 445 | 497 | 628 | 454 | 445 | 121 | 1 |
| Sunny days | 27 | 23 | 13 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 27 |
| Rainy days | 4 | 5 | 18 | 24 | 31 | 30 | 31 | 31 | 30 | 31 | 25 | 4 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Mamonso is at