Average annual temperature is 13.8 °C
Absolute maximum temperature: 37.9 °C
Absolute minimum temperature: -14.3 °C
Number of sunny days: 243 days
Number of rainy days: 109 days
Number of snow days: 13 days
Look at detailed online map of Seylān
* Weather data for Seylān 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) | 7.6 | 11.5 | 17.3 | 24.2 | 27.6 | 34.8 | 37.9 | 37.4 | 35.3 | 25.5 | 20.9 | 14.4 |
| Average daytime temperature (°C) | 3.2 | 3.6 | 14.2 | 18.3 | 22.8 | 28.9 | 33.1 | 33.4 | 28.2 | 21.0 | 15.9 | 9.9 |
| Average temperature (°C) | -0.8 | -1.7 | 9.0 | 12.7 | 17.1 | 23.2 | 26.7 | 27.0 | 21.5 | 14.8 | 9.7 | 4.8 |
| Average night temperature (°C) | -4.4 | -6.7 | 4.0 | 6.9 | 11.4 | 17.1 | 19.9 | 20.0 | 14.9 | 9.1 | 4.5 | 0.5 |
| Absolute minimum temperature (°C) | -9.2 | -14.3 | -2.8 | -2.5 | 4.6 | 13.6 | 16.9 | 16.4 | 11.2 | 7.1 | -2.9 | -4.1 |
| 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) | 7.7 | 9.0 | 9.3 | 11.0 | 11.4 | 13.5 | 13.3 | 12.0 | 11.5 | 9.7 | 8.1 | 7.3 |
| Precipitation (mm) | 16 | 32 | 43 | 48 | 46 | 18 | 0 | 5 | 0 | 7 | 22 | 31 |
| Sunny days | 26 | 19 | 14 | 14 | 9 | 20 | 29 | 29 | 28 | 20 | 17 | 18 |
| Rainy days | 1 | 2 | 17 | 15 | 22 | 10 | 2 | 2 | 2 | 11 | 13 | 12 |
| Snow days | 4 | 7 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Seylān during the most sunny months:
The largest precipitation sum in Seylān is at