Average annual temperature is 9.3 °C
Absolute maximum temperature: 32.6 °C
Absolute minimum temperature: -23.2 °C
Number of sunny days: 239 days
Number of rainy days: 115 days
Number of snow days: 11 days
Look at detailed online map of Siyan
* Weather data for Siyan China is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 7.7 | 9.3 | 18.7 | 28.4 | 27.9 | 30.7 | 32.6 | 30.7 | 28.0 | 20.3 | 21.0 | 13.4 |
| Average daytime temperature (°C) | -0.9 | 4.8 | 12.3 | 15.0 | 20.7 | 26.6 | 27.6 | 26.7 | 22.2 | 16.4 | 5.9 | -1.1 |
| Average temperature (°C) | -5.9 | -0.6 | 5.8 | 9.3 | 15.2 | 20.7 | 22.2 | 21.4 | 17.0 | 10.7 | 1.1 | -5.7 |
| Average night temperature (°C) | -11.3 | -5.7 | 0.1 | 4.2 | 10.2 | 14.8 | 16.9 | 16.5 | 12.3 | 5.4 | -3.5 | -10.8 |
| Absolute minimum temperature (°C) | -23.2 | -10.6 | -8.2 | -5.2 | 1.9 | 8.9 | 11.4 | 9.2 | 3.1 | 0.0 | -10.4 | -22.3 |
| 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 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 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) | 7.9 | 8.0 | 9.5 | 7.9 | 7.7 | 11.2 | 10.2 | 10.0 | 8.1 | 8.2 | 7.9 | 7.4 |
| Precipitation (mm) | 4 | 16 | 2 | 93 | 87 | 50 | 95 | 106 | 52 | 23 | 9 | 18 |
| Sunny days | 30 | 20 | 24 | 10 | 11 | 22 | 18 | 16 | 15 | 23 | 24 | 26 |
| Rainy days | 0 | 1 | 7 | 20 | 20 | 8 | 13 | 15 | 15 | 8 | 4 | 4 |
| Snow days | 1 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 |
The best time to visit Siyan during the most sunny months:
The largest precipitation sum in Siyan is at