Average annual temperature is 22.2 °C
Absolute maximum temperature: 36.0 °C
Absolute minimum temperature: 2.1 °C
Number of sunny days: 102 days
Number of rainy days: 263 days
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) | 25.8 | 25.3 | 28.8 | 29.6 | 35.0 | 33.6 | 36.0 | 33.8 | 32.6 | 32.2 | 28.9 | 27.3 |
| Average daytime temperature (°C) | 17.6 | 21.1 | 24.1 | 25.8 | 28.9 | 30.9 | 32.8 | 31.7 | 30.1 | 27.1 | 24.4 | 19.9 |
| Average temperature (°C) | 13.4 | 16.6 | 19.6 | 21.9 | 25.1 | 27.2 | 28.6 | 27.7 | 26.5 | 23.6 | 20.1 | 15.3 |
| Average night temperature (°C) | 9.2 | 12.5 | 15.6 | 18.8 | 22.3 | 24.5 | 25.3 | 24.9 | 24.1 | 20.6 | 16.2 | 11.0 |
| Absolute minimum temperature (°C) | 2.1 | 6.3 | 11.4 | 12.0 | 18.7 | 22.8 | 24.1 | 23.0 | 23.4 | 16.9 | 8.2 | 2.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.9 | 11.4 | 12.0 | 12.7 | 13.3 | 13.6 | 13.4 | 12.9 | 12.3 | 11.6 | 11.0 | 10.7 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 5.9 | 6.1 | 5.4 | 4.8 | 7.0 | 8.2 | 10.4 | 8.7 | 7.2 | 6.5 | 7.7 | 6.7 |
| Precipitation (mm) | 105 | 88 | 244 | 272 | 220 | 337 | 186 | 207 | 467 | 166 | 16 | 39 |
| Sunny days | 15 | 16 | 11 | 7 | 1 | 1 | 4 | 2 | 2 | 11 | 17 | 15 |
| Rainy days | 16 | 12 | 20 | 23 | 30 | 29 | 27 | 29 | 28 | 20 | 13 | 16 |
| Snow days | 0 | 0 | 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