Average annual temperature is 31.5 °C
Absolute maximum temperature: 46.0 °C
Absolute minimum temperature: 14.3 °C
Number of sunny days: 300 days
Number of rainy days: 65 days
Look at detailed online map of Hassi Boû-Séï
* Weather data for Hassi Boû-Séï Mauritania is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 36.3 | 39.2 | 41.8 | 42.8 | 44.9 | 46.0 | 40.6 | 39.7 | 41.9 | 41.1 | 40.5 | 38.2 |
| Average daytime temperature (°C) | 32.3 | 36.2 | 39.2 | 40.2 | 41.9 | 41.2 | 36.3 | 34.6 | 36.8 | 39.1 | 37.3 | 33.7 |
| Average temperature (°C) | 25.6 | 29.3 | 32.4 | 34.0 | 36.4 | 35.6 | 31.6 | 30.4 | 31.7 | 33.5 | 30.5 | 27.0 |
| Average night temperature (°C) | 19.9 | 23.2 | 25.4 | 27.3 | 30.6 | 29.7 | 27.2 | 26.5 | 27.1 | 27.8 | 23.9 | 21.6 |
| Absolute minimum temperature (°C) | 16.3 | 18.1 | 22.7 | 24.5 | 26.2 | 26.1 | 25.0 | 24.1 | 24.5 | 23.8 | 19.0 | 14.3 |
| 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 | 13.0 | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.3 | 11.6 | 12.1 | 12.5 | 12.9 | 13.0 | 13.0 | 12.6 | 12.2 | 11.8 | 11.4 | 11.2 |
| 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) | 9.5 | 9.9 | 10.4 | 10.8 | 10.3 | 10.7 | 10.2 | 9.6 | 9.9 | 10.4 | 10.5 | 10.0 |
| Precipitation (mm) | 0 | 0 | 0 | 2 | 0 | 29 | 82 | 66 | 45 | 1 | 0 | 0 |
| Sunny days | 31 | 28 | 31 | 29 | 30 | 21 | 15 | 14 | 16 | 24 | 30 | 31 |
| Rainy days | 0 | 0 | 0 | 1 | 1 | 9 | 16 | 17 | 14 | 7 | 0 | 0 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Hassi Boû-Séï is at