Average annual temperature is 13.7 °C
Absolute maximum temperature: 29.8 °C
Absolute minimum temperature: -6.5 °C
Number of sunny days: 110 days
Number of rainy days: 253 days
Number of snow days: 2 days
Look at detailed online map of Hai’an
* Weather data for Hai’an 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) | 20.7 | 21.4 | 23.4 | 28.4 | 29.8 | 29.1 | 26.4 | 24.5 | 24.5 | 24.0 | 20.6 | 18.9 |
| Average daytime temperature (°C) | 10.3 | 15.9 | 17.8 | 23.1 | 24.2 | 22.2 | 22.9 | 21.5 | 21.5 | 18.1 | 16.3 | 13.2 |
| Average temperature (°C) | 5.0 | 9.7 | 11.6 | 16.6 | 18.1 | 17.7 | 18.5 | 17.5 | 16.9 | 13.6 | 11.3 | 8.3 |
| Average night temperature (°C) | 0.2 | 5.0 | 7.2 | 10.6 | 13.5 | 14.3 | 15.1 | 14.5 | 13.5 | 10.6 | 7.6 | 4.2 |
| Absolute minimum temperature (°C) | -6.5 | -0.1 | 1.1 | 5.0 | 9.1 | 11.4 | 12.2 | 10.9 | 11.0 | 5.4 | 1.6 | -2.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.8 | 11.3 | 12.0 | 12.8 | 13.4 | 13.7 | 13.5 | 13.0 | 12.3 | 11.6 | 10.9 | 10.6 |
| 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) | 7.1 | 8.5 | 8.9 | 10.6 | 9.9 | 8.8 | 9.6 | 9.7 | 10.2 | 7.4 | 8.0 | 7.3 |
| Precipitation (mm) | 3 | 21 | 37 | 29 | 45 | 209 | 174 | 292 | 61 | 84 | 23 | 20 |
| Sunny days | 25 | 11 | 7 | 15 | 8 | 4 | 3 | 0 | 5 | 4 | 17 | 11 |
| Rainy days | 6 | 15 | 24 | 15 | 23 | 26 | 28 | 31 | 25 | 27 | 13 | 20 |
| Snow days | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Hai’an is at