Average annual temperature is 13.7 °C
Absolute maximum temperature: 37.9 °C
Absolute minimum temperature: -8.4 °C
Number of sunny days: 252 days
Number of rainy days: 100 days
Number of snow days: 13 days
Look at detailed online map of Sīs
* Weather data for Sīs 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) | 6.4 | 13.0 | 18.8 | 25.1 | 29.4 | 34.2 | 37.9 | 37.6 | 35.1 | 24.1 | 20.1 | 12.8 |
| Average daytime temperature (°C) | 3.4 | 5.4 | 14.6 | 19.0 | 23.9 | 30.4 | 33.7 | 34.2 | 28.4 | 20.7 | 14.6 | 8.6 |
| Average temperature (°C) | -1.1 | 0.6 | 9.4 | 13.0 | 17.5 | 23.3 | 25.9 | 26.3 | 20.8 | 14.2 | 9.5 | 4.3 |
| Average night temperature (°C) | -4.6 | -4.0 | 4.1 | 6.5 | 10.5 | 16.0 | 18.4 | 18.6 | 13.8 | 8.3 | 4.7 | 0.4 |
| Absolute minimum temperature (°C) | -7.9 | -8.4 | -0.9 | -1.7 | 4.3 | 13.0 | 15.2 | 14.0 | 9.4 | 5.6 | -2.8 | -5.9 |
| 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 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 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 | 8.8 | 9.0 | 10.5 | 11.6 | 13.5 | 13.2 | 12.1 | 11.3 | 9.6 | 7.9 | 7.3 |
| Precipitation (mm) | 10 | 27 | 63 | 58 | 43 | 3 | 0 | 0 | 0 | 16 | 33 | 32 |
| Sunny days | 24 | 18 | 12 | 13 | 13 | 26 | 29 | 30 | 26 | 22 | 21 | 18 |
| Rainy days | 4 | 4 | 18 | 16 | 18 | 4 | 2 | 1 | 4 | 9 | 9 | 11 |
| Snow days | 3 | 6 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
The best time to visit Sīs during the most sunny months:
The largest precipitation sum in Sīs is at