Average annual temperature is 14.6 °C
Absolute maximum temperature: 35.1 °C
Absolute minimum temperature: -14.4 °C
Number of sunny days: 266 days
Number of rainy days: 89 days
Number of snow days: 10 days
Look at detailed online map of Īstīq Sū
* Weather data for Īstīq Sū 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) | 13.9 | 14.6 | 23.7 | 30.3 | 28.3 | 32.2 | 35.1 | 33.1 | 33.8 | 27.8 | 23.9 | 20.7 |
| Average daytime temperature (°C) | 2.8 | 8.3 | 16.7 | 19.6 | 22.4 | 28.7 | 30.2 | 28.5 | 23.1 | 20.4 | 17.7 | 12.7 |
| Average temperature (°C) | -0.6 | 3.7 | 11.9 | 14.6 | 17.8 | 24.0 | 25.9 | 23.9 | 18.2 | 15.2 | 12.3 | 7.8 |
| Average night temperature (°C) | -4.7 | -0.6 | 7.1 | 8.9 | 12.4 | 18.5 | 20.5 | 18.4 | 13.1 | 10.4 | 7.6 | 3.4 |
| Absolute minimum temperature (°C) | -14.4 | -9.4 | 3.0 | 1.4 | 3.8 | 15.2 | 17.6 | 13.3 | 8.7 | 4.5 | 1.3 | -0.5 |
| 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.8 | 12.0 | 13.1 | 14.1 | 14.7 | 14.4 | 13.5 | 12.4 | 11.2 | 10.2 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 8.1 | 7.4 | 9.1 | 11.0 | 10.2 | 12.9 | 13.0 | 12.1 | 11.5 | 9.4 | 8.2 | 7.3 |
| Precipitation (mm) | 10 | 53 | 67 | 39 | 49 | 5 | 0 | 2 | 0 | 21 | 22 | 10 |
| Sunny days | 25 | 13 | 17 | 18 | 14 | 25 | 31 | 28 | 30 | 19 | 24 | 22 |
| Rainy days | 3 | 8 | 14 | 12 | 17 | 5 | 0 | 3 | 0 | 12 | 6 | 9 |
| Snow days | 3 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Īstīq Sū during the most sunny months:
The largest precipitation sum in Īstīq Sū is at