Average annual temperature is 16.4 °C
Absolute maximum temperature: 37.7 °C
Absolute minimum temperature: -11.8 °C
Number of sunny days: 283 days
Number of rainy days: 69 days
Number of snow days: 13 days
Look at detailed online map of Tehrān
* Weather data for Tehrān 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) | 8.3 | 13.9 | 20.3 | 27.3 | 33.7 | 36.7 | 37.7 | 37.1 | 35.5 | 26.0 | 20.2 | 16.0 |
| Average daytime temperature (°C) | 4.3 | 6.6 | 15.5 | 21.1 | 27.0 | 32.7 | 35.3 | 33.3 | 29.5 | 22.4 | 15.7 | 11.1 |
| Average temperature (°C) | 0.5 | 1.8 | 10.5 | 15.5 | 21.5 | 27.3 | 30.3 | 28.5 | 24.5 | 17.5 | 11.2 | 7.0 |
| Average night temperature (°C) | -2.9 | -2.8 | 5.4 | 9.2 | 14.5 | 20.4 | 24.0 | 22.3 | 18.8 | 12.0 | 6.2 | 2.5 |
| Absolute minimum temperature (°C) | -5.8 | -11.8 | 2.0 | 0.5 | 6.1 | 16.6 | 20.7 | 18.5 | 13.3 | 8.6 | -0.8 | -0.6 |
| 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 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.3 | 8.8 | 8.4 | 11.0 | 12.1 | 12.8 | 12.9 | 12.3 | 11.1 | 9.8 | 8.8 | 8.1 |
| Precipitation (mm) | 45 | 30 | 108 | 29 | 9 | 5 | 0 | 0 | 0 | 28 | 47 | 28 |
| Sunny days | 22 | 17 | 13 | 23 | 22 | 23 | 31 | 29 | 30 | 25 | 24 | 24 |
| Rainy days | 3 | 4 | 18 | 7 | 9 | 7 | 0 | 2 | 0 | 6 | 6 | 7 |
| Snow days | 6 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Tehrān during the most sunny months:
The largest precipitation sum in Tehrān is at