Average annual temperature is 17.0 °C
Absolute maximum temperature: 36.7 °C
Absolute minimum temperature: -6.0 °C
Number of sunny days: 211 days
Number of rainy days: 153 days
Number of snow days: 1 day
Look at detailed online map of Siwan
* Weather data for Siwan 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) | 18.6 | 18.7 | 27.7 | 32.8 | 32.1 | 35.4 | 35.3 | 36.7 | 34.6 | 26.7 | 27.2 | 20.2 |
| Average daytime temperature (°C) | 10.6 | 11.6 | 18.6 | 22.8 | 26.3 | 29.7 | 33.1 | 32.0 | 27.7 | 23.3 | 16.4 | 9.7 |
| Average temperature (°C) | 4.3 | 6.5 | 13.3 | 17.7 | 21.6 | 25.1 | 28.7 | 27.7 | 23.6 | 18.5 | 11.4 | 4.6 |
| Average night temperature (°C) | -1.3 | 1.4 | 8.1 | 12.9 | 17.7 | 21.3 | 25.1 | 23.8 | 20.2 | 14.3 | 7.2 | -0.1 |
| Absolute minimum temperature (°C) | -4.9 | -3.7 | 1.9 | 5.8 | 11.7 | 15.4 | 20.2 | 18.1 | 16.2 | 10.1 | 0.4 | -6.0 |
| 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 | 10.0 |
| Daylight mean duration (h) | 10.3 | 11.0 | 12.0 | 13.0 | 13.8 | 14.2 | 14.0 | 13.3 | 12.4 | 11.4 | 10.5 | 10.1 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 7.1 | 5.5 | 6.4 | 7.6 | 6.2 | 7.4 | 9.4 | 10.0 | 6.7 | 6.6 | 6.1 | 6.9 |
| Precipitation (mm) | 14 | 28 | 26 | 73 | 128 | 156 | 179 | 136 | 266 | 78 | 33 | 26 |
| Sunny days | 26 | 15 | 25 | 17 | 14 | 13 | 10 | 16 | 12 | 20 | 22 | 21 |
| Rainy days | 5 | 12 | 6 | 13 | 17 | 17 | 21 | 15 | 18 | 11 | 8 | 10 |
| Snow days | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Siwan during the most sunny months:
The largest precipitation sum in Siwan is at