Average annual temperature is 28.4 °C
Absolute maximum temperature: 41.8 °C
Absolute minimum temperature: 15.5 °C
Number of sunny days: 218 days
Number of rainy days: 147 days
Look at detailed online map of Sien
* Weather data for Sien Burkina Faso is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 37.5 | 38.9 | 40.4 | 41.2 | 41.8 | 37.7 | 33.3 | 32.1 | 33.4 | 35.7 | 36.5 | 36.8 |
| Average daytime temperature (°C) | 34.2 | 37.1 | 38.4 | 38.9 | 37.1 | 33.9 | 31.2 | 29.4 | 30.4 | 33.2 | 35.3 | 33.8 |
| Average temperature (°C) | 26.6 | 29.3 | 31.3 | 32.3 | 31.0 | 28.8 | 26.9 | 25.5 | 26.0 | 27.9 | 28.8 | 26.1 |
| Average night temperature (°C) | 19.8 | 22.0 | 24.2 | 26.0 | 25.9 | 24.7 | 23.4 | 22.7 | 22.5 | 23.2 | 22.3 | 19.4 |
| Absolute minimum temperature (°C) | 17.5 | 19.5 | 21.4 | 23.1 | 23.0 | 22.8 | 21.9 | 21.4 | 21.1 | 21.4 | 19.3 | 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) | 11.5 | 11.8 | 12.1 | 12.4 | 12.7 | 12.8 | 12.7 | 12.5 | 12.2 | 11.9 | 11.6 | 11.4 |
| 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) | 10.8 | 10.9 | 10.3 | 10.2 | 9.4 | 9.7 | 9.3 | 8.2 | 9.6 | 10.1 | 10.2 | 10.4 |
| Precipitation (mm) | 0 | 0 | 0 | 6 | 56 | 163 | 157 | 318 | 147 | 17 | 0 | 0 |
| Sunny days | 31 | 28 | 28 | 24 | 17 | 4 | 5 | 1 | 7 | 14 | 28 | 31 |
| Rainy days | 0 | 0 | 3 | 6 | 14 | 26 | 26 | 30 | 23 | 17 | 2 | 0 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sien is at