Average annual temperature is 25.5 °C
Absolute maximum temperature: 37.3 °C
Absolute minimum temperature: 17.0 °C
Number of sunny days: 82 days
Number of rainy days: 283 days
Look at detailed online map of Tiso
* Weather data for Tiso 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) | 35.6 | 37.0 | 37.3 | 35.0 | 33.6 | 32.5 | 32.3 | 32.2 | 32.7 | 31.6 | 32.0 | 34.6 |
| Average daytime temperature (°C) | 33.8 | 35.4 | 34.5 | 33.2 | 31.6 | 29.8 | 29.3 | 28.7 | 29.1 | 29.4 | 30.2 | 32.2 |
| Average temperature (°C) | 25.9 | 27.7 | 27.0 | 26.7 | 26.1 | 24.7 | 24.3 | 24.2 | 24.5 | 24.7 | 25.3 | 25.4 |
| Average night temperature (°C) | 20.2 | 22.2 | 22.3 | 23.3 | 23.2 | 22.4 | 22.1 | 22.2 | 22.2 | 22.2 | 22.4 | 20.4 |
| Absolute minimum temperature (°C) | 17.1 | 20.1 | 19.7 | 21.7 | 22.3 | 21.0 | 20.7 | 21.0 | 21.6 | 21.3 | 20.8 | 17.0 |
| 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) | 9.6 | 9.8 | 8.5 | 8.4 | 7.5 | 7.3 | 6.6 | 5.7 | 7.2 | 7.3 | 8.3 | 10.0 |
| Precipitation (mm) | 11 | 3 | 80 | 155 | 328 | 278 | 412 | 538 | 408 | 319 | 143 | 5 |
| Sunny days | 24 | 22 | 11 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 21 |
| Rainy days | 7 | 6 | 20 | 28 | 31 | 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 Tiso is at