Average annual temperature is 11.7 °C
Absolute maximum temperature: 34.1 °C
Absolute minimum temperature: -16.3 °C
Number of sunny days: 266 days
Number of rainy days: 79 days
Number of snow days: 20 days
Look at detailed online map of Isto
* Weather data for Isto 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) | 7.9 | 14.2 | 19.2 | 23.0 | 26.6 | 32.4 | 34.1 | 34.1 | 32.8 | 24.1 | 19.0 | 14.9 |
| Average daytime temperature (°C) | 1.6 | 3.3 | 13.0 | 17.2 | 20.9 | 25.8 | 27.2 | 29.0 | 23.9 | 18.7 | 13.9 | 8.4 |
| Average temperature (°C) | -2.3 | -1.7 | 8.3 | 11.5 | 15.3 | 19.6 | 21.6 | 22.3 | 17.5 | 13.5 | 9.6 | 4.5 |
| Average night temperature (°C) | -5.8 | -7.0 | 3.7 | 6.0 | 9.7 | 13.8 | 16.5 | 16.7 | 12.6 | 9.0 | 5.3 | 0.6 |
| Absolute minimum temperature (°C) | -13.0 | -16.3 | -2.7 | -5.7 | 0.9 | 10.5 | 12.9 | 14.1 | 9.6 | 6.2 | -2.4 | -4.0 |
| 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) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.4 | 13.6 | 12.4 | 11.2 | 10.2 | 9.6 |
| 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) | 7.2 | 8.7 | 8.8 | 10.9 | 11.3 | 12.9 | 12.6 | 11.9 | 11.0 | 9.4 | 8.4 | 7.4 |
| Precipitation (mm) | 23 | 38 | 104 | 46 | 58 | 5 | 0 | 1 | 0 | 17 | 37 | 122 |
| Sunny days | 23 | 17 | 15 | 17 | 17 | 23 | 30 | 29 | 29 | 21 | 23 | 22 |
| Rainy days | 0 | 1 | 16 | 12 | 14 | 7 | 1 | 2 | 1 | 10 | 7 | 8 |
| Snow days | 8 | 10 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Isto during the most sunny months:
The largest precipitation sum in Isto is at