Average annual temperature is 20.2 °C
Absolute maximum temperature: 35.2 °C
Absolute minimum temperature: 9.1 °C
Number of sunny days: 230 days
Number of rainy days: 135 days
Look at detailed online map of Siaha
* Weather data for Siaha Eritrea is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 31.5 | 31.3 | 32.8 | 33.6 | 35.2 | 32.1 | 32.0 | 30.1 | 32.3 | 32.2 | 29.3 | 29.9 |
| Average daytime temperature (°C) | 26.6 | 29.3 | 30.0 | 31.5 | 31.5 | 29.5 | 29.1 | 25.7 | 29.2 | 28.9 | 26.7 | 27.0 |
| Average temperature (°C) | 17.3 | 18.8 | 20.1 | 22.0 | 23.0 | 22.1 | 21.8 | 19.1 | 21.2 | 20.6 | 18.4 | 17.8 |
| Average night temperature (°C) | 10.9 | 11.6 | 12.8 | 15.0 | 16.4 | 15.3 | 15.7 | 14.3 | 14.0 | 14.2 | 12.7 | 11.1 |
| Absolute minimum temperature (°C) | 9.1 | 9.4 | 9.3 | 11.7 | 12.0 | 13.7 | 14.3 | 12.4 | 12.3 | 13.1 | 9.2 | 9.5 |
| 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 | 13.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.4 | 11.7 | 12.1 | 12.5 | 12.8 | 13.0 | 12.9 | 12.6 | 12.2 | 11.8 | 11.4 | 11.3 |
| 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) | 10.5 | 10.8 | 10.8 | 11.2 | 10.8 | 10.9 | 10.2 | 9.9 | 10.7 | 10.5 | 9.8 | 10.4 |
| Precipitation (mm) | 3 | 0 | 1 | 8 | 20 | 24 | 48 | 175 | 7 | 20 | 58 | 0 |
| Sunny days | 23 | 24 | 25 | 23 | 18 | 20 | 7 | 3 | 21 | 19 | 16 | 31 |
| Rainy days | 8 | 4 | 6 | 7 | 13 | 10 | 24 | 28 | 9 | 12 | 14 | 0 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Siaha is at