Average annual temperature is 29.3 °C
Absolute maximum temperature: 43.6 °C
Absolute minimum temperature: 15.4 °C
Number of sunny days: 250 days
Number of rainy days: 115 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) | 38.8 | 40.2 | 41.6 | 42.5 | 43.6 | 41.3 | 34.6 | 33.1 | 34.9 | 38.7 | 38.2 | 38.5 |
| Average daytime temperature (°C) | 34.3 | 37.6 | 39.7 | 40.2 | 39.8 | 36.1 | 32.2 | 30.3 | 31.5 | 35.6 | 37.2 | 34.2 |
| Average temperature (°C) | 26.1 | 29.2 | 32.0 | 33.3 | 33.7 | 30.7 | 27.7 | 26.2 | 27.0 | 29.8 | 30.1 | 26.1 |
| Average night temperature (°C) | 18.6 | 21.3 | 24.4 | 26.3 | 28.3 | 26.3 | 24.1 | 23.2 | 23.5 | 24.6 | 23.3 | 19.0 |
| Absolute minimum temperature (°C) | 16.4 | 18.9 | 21.7 | 23.3 | 25.4 | 23.9 | 22.8 | 22.1 | 21.9 | 22.6 | 20.4 | 15.4 |
| 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 | 10.5 | 10.2 | 9.6 | 9.9 | 9.1 | 8.1 | 9.5 | 10.0 | 10.1 | 10.2 |
| Precipitation (mm) | 0 | 0 | 0 | 1 | 5 | 102 | 162 | 405 | 142 | 9 | 0 | 0 |
| Sunny days | 31 | 28 | 31 | 27 | 22 | 12 | 9 | 3 | 7 | 20 | 29 | 31 |
| Rainy days | 0 | 0 | 0 | 3 | 9 | 18 | 22 | 28 | 23 | 11 | 1 | 0 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sien is at