Average annual temperature is 19.0 °C
Absolute maximum temperature: 41.0 °C
Absolute minimum temperature: -6.2 °C
Number of sunny days: 289 days
Number of rainy days: 66 days
Number of snow days: 10 days
Look at detailed online map of Sīrū
* Weather data for Sīrū Iran is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 10.4 | 17.4 | 25.5 | 28.7 | 34.9 | 39.7 | 40.6 | 41.0 | 37.6 | 31.3 | 23.2 | 20.0 |
| Average daytime temperature (°C) | 5.2 | 9.6 | 18.7 | 24.2 | 29.3 | 34.0 | 37.2 | 35.7 | 31.4 | 25.1 | 18.0 | 13.5 |
| Average temperature (°C) | 2.1 | 5.5 | 14.1 | 19.0 | 23.5 | 28.5 | 32.0 | 30.5 | 26.4 | 20.4 | 14.5 | 10.6 |
| Average night temperature (°C) | -0.9 | 1.5 | 9.5 | 13.3 | 17.1 | 22.4 | 26.0 | 24.5 | 20.6 | 15.6 | 10.9 | 7.4 |
| Absolute minimum temperature (°C) | -6.2 | -4.7 | 4.4 | 2.5 | 9.6 | 15.2 | 21.9 | 19.6 | 15.4 | 10.9 | 6.7 | 2.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.4 | 8.8 | 9.2 | 10.9 | 11.9 | 12.5 | 12.7 | 11.9 | 11.0 | 9.3 | 8.8 | 8.4 |
| Precipitation (mm) | 31 | 46 | 60 | 7 | 12 | 9 | 0 | 0 | 0 | 6 | 14 | 11 |
| Sunny days | 19 | 17 | 16 | 25 | 23 | 24 | 31 | 30 | 29 | 23 | 24 | 28 |
| Rainy days | 5 | 8 | 15 | 5 | 8 | 6 | 0 | 1 | 1 | 8 | 6 | 3 |
| Snow days | 7 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sīrū is at