Average annual temperature is 15.3 °C
Absolute maximum temperature: 31.2 °C
Absolute minimum temperature: -3.5 °C
Number of sunny days: 124 days
Number of rainy days: 236 days
Number of snow days: 5 days
Look at detailed online map of Chelsī
* Weather data for Chelsī 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) | 14.7 | 15.4 | 26.1 | 25.9 | 28.7 | 27.6 | 29.8 | 31.2 | 28.4 | 27.4 | 24.2 | 21.0 |
| Average daytime temperature (°C) | 6.1 | 8.3 | 15.5 | 18.0 | 20.3 | 23.5 | 25.1 | 27.3 | 21.6 | 20.0 | 18.8 | 14.2 |
| Average temperature (°C) | 3.9 | 5.2 | 11.9 | 14.6 | 17.3 | 20.8 | 22.7 | 24.2 | 19.4 | 17.0 | 14.8 | 10.5 |
| Average night temperature (°C) | 1.0 | 1.6 | 7.9 | 10.6 | 13.9 | 17.5 | 19.9 | 20.8 | 17.1 | 13.7 | 10.7 | 6.8 |
| Absolute minimum temperature (°C) | -2.7 | -3.5 | 3.2 | 3.5 | 7.1 | 14.2 | 17.1 | 18.3 | 14.3 | 11.7 | 4.2 | 1.3 |
| 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) | 5.0 | 7.8 | 7.3 | 9.8 | 8.9 | 9.9 | 8.3 | 10.1 | 6.0 | 7.3 | 7.6 | 6.8 |
| Precipitation (mm) | 234 | 257 | 154 | 121 | 310 | 191 | 286 | 157 | 377 | 226 | 185 | 229 |
| Sunny days | 6 | 8 | 7 | 9 | 6 | 10 | 13 | 18 | 6 | 13 | 14 | 14 |
| Rainy days | 23 | 17 | 24 | 21 | 25 | 20 | 18 | 13 | 24 | 18 | 16 | 17 |
| Snow days | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Chelsī during the most sunny months:
The largest precipitation sum in Chelsī is at