Average annual temperature is 10.6 °C
Absolute maximum temperature: 26.6 °C
Absolute minimum temperature: -3.4 °C
Number of sunny days: 136 days
Number of rainy days: 226 days
Number of snow days: 3 days
Look at detailed online map of Haimen
* Weather data for Haimen 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) | 15.9 | 14.9 | 16.8 | 20.7 | 25.8 | 26.6 | 24.2 | 20.8 | 21.1 | 18.3 | 15.3 | 13.2 |
| Average daytime temperature (°C) | 9.3 | 11.4 | 13.7 | 17.1 | 18.6 | 20.2 | 19.9 | 18.7 | 18.6 | 15.4 | 12.7 | 9.5 |
| Average temperature (°C) | 4.3 | 5.8 | 7.9 | 11.0 | 13.2 | 15.1 | 15.4 | 15.0 | 14.3 | 11.6 | 8.5 | 5.1 |
| Average night temperature (°C) | 0.3 | 1.4 | 3.8 | 6.4 | 8.9 | 11.4 | 12.4 | 12.5 | 11.0 | 9.1 | 5.1 | 1.8 |
| Absolute minimum temperature (°C) | -3.4 | -1.8 | 1.4 | 1.7 | 4.1 | 9.6 | 10.8 | 10.8 | 8.9 | 6.4 | 0.3 | -0.6 |
| 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) | 10.7 | 11.3 | 12.0 | 12.8 | 13.4 | 13.8 | 13.6 | 13.0 | 12.3 | 11.5 | 10.9 | 10.5 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 9.9 | 9.5 | 10.6 | 11.2 | 10.7 | 9.5 | 8.9 | 6.7 | 9.8 | 8.8 | 9.2 | 8.5 |
| Precipitation (mm) | 0 | 15 | 22 | 40 | 60 | 212 | 217 | 433 | 161 | 83 | 28 | 26 |
| Sunny days | 30 | 16 | 9 | 8 | 14 | 2 | 0 | 0 | 2 | 10 | 25 | 20 |
| Rainy days | 0 | 10 | 22 | 22 | 17 | 28 | 31 | 31 | 28 | 21 | 5 | 11 |
| Snow days | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Haimen is at