Average annual temperature is 28.9 °C
Absolute maximum temperature: 43.8 °C
Absolute minimum temperature: 14.2 °C
Number of sunny days: 238 days
Number of rainy days: 127 days
Look at detailed online map of Sièn
* Weather data for Sièn 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) | 38.2 | 40.0 | 41.0 | 41.9 | 43.8 | 40.0 | 35.5 | 32.9 | 34.6 | 38.2 | 37.5 | 37.7 |
| Average daytime temperature (°C) | 34.1 | 37.3 | 39.3 | 40.1 | 39.6 | 34.9 | 32.3 | 30.3 | 31.4 | 35.1 | 36.6 | 33.8 |
| Average temperature (°C) | 25.6 | 28.8 | 31.5 | 33.1 | 33.4 | 29.8 | 27.7 | 26.0 | 26.9 | 29.3 | 29.4 | 25.3 |
| Average night temperature (°C) | 17.6 | 20.8 | 23.3 | 25.4 | 27.8 | 25.6 | 24.0 | 22.9 | 23.4 | 24.1 | 22.1 | 17.6 |
| Absolute minimum temperature (°C) | 15.3 | 18.6 | 19.4 | 22.7 | 25.5 | 23.4 | 22.2 | 21.5 | 22.1 | 22.4 | 17.9 | 14.2 |
| 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 | 11.7 | 12.1 | 12.4 | 12.7 | 12.9 | 12.8 | 12.5 | 12.2 | 11.8 | 11.5 | 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) | 10.7 | 10.8 | 10.3 | 10.5 | 9.9 | 9.7 | 9.5 | 8.5 | 9.7 | 9.9 | 10.1 | 10.1 |
| Precipitation (mm) | 0 | 0 | 0 | 1 | 5 | 132 | 158 | 293 | 153 | 27 | 0 | 0 |
| Sunny days | 31 | 28 | 29 | 28 | 18 | 10 | 7 | 3 | 5 | 18 | 30 | 31 |
| Rainy days | 0 | 0 | 2 | 2 | 13 | 20 | 24 | 28 | 25 | 13 | 0 | 0 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sièn is at