Average annual temperature is 12.3 °C
Absolute maximum temperature: 37.2 °C
Absolute minimum temperature: -17.2 °C
Number of sunny days: 282 days
Number of rainy days: 71 days
Number of snow days: 12 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) | 4.7 | 12.0 | 16.9 | 20.4 | 26.0 | 32.5 | 37.2 | 36.1 | 33.4 | 23.9 | 18.1 | 14.0 |
| Average daytime temperature (°C) | -1.1 | 2.2 | 12.2 | 16.2 | 21.0 | 28.2 | 33.9 | 32.9 | 28.9 | 20.7 | 13.6 | 10.0 |
| Average temperature (°C) | -4.8 | -2.4 | 6.8 | 10.1 | 15.0 | 21.3 | 26.4 | 25.6 | 21.3 | 14.2 | 8.4 | 4.8 |
| Average night temperature (°C) | -8.4 | -7.1 | 2.4 | 4.7 | 8.7 | 14.0 | 18.4 | 18.1 | 14.3 | 8.8 | 3.9 | 1.0 |
| Absolute minimum temperature (°C) | -15.8 | -17.2 | -4.3 | -5.2 | 2.2 | 9.6 | 16.2 | 14.2 | 10.2 | 6.0 | -2.4 | -3.0 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 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) | 6.1 | 8.8 | 8.4 | 10.9 | 12.2 | 13.3 | 12.6 | 11.9 | 11.3 | 9.5 | 8.1 | 7.4 |
| Precipitation (mm) | 66 | 21 | 108 | 64 | 19 | 5 | 0 | 0 | 0 | 5 | 24 | 23 |
| Sunny days | 20 | 20 | 13 | 19 | 21 | 28 | 31 | 30 | 30 | 24 | 24 | 22 |
| Rainy days | 4 | 3 | 18 | 11 | 10 | 2 | 0 | 1 | 0 | 7 | 6 | 9 |
| Snow days | 7 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Sīs during the most sunny months:
The largest precipitation sum in Sīs is at