Average annual temperature is 15.1 °C
Absolute maximum temperature: 32.6 °C
Absolute minimum temperature: -5.4 °C
Number of sunny days: 89 days
Number of rainy days: 272 days
Number of snow days: 4 days
Look at detailed online map of Heikan
* Weather data for Heikan 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) | 24.5 | 23.1 | 27.2 | 31.9 | 32.6 | 29.3 | 29.1 | 26.8 | 27.1 | 26.7 | 23.9 | 22.8 |
| Average daytime temperature (°C) | 10.8 | 16.8 | 19.2 | 25.1 | 26.3 | 24.4 | 25.6 | 23.9 | 23.8 | 19.9 | 18.8 | 15.1 |
| Average temperature (°C) | 5.1 | 10.0 | 12.8 | 17.8 | 20.0 | 19.6 | 20.8 | 19.4 | 18.8 | 15.1 | 12.6 | 9.0 |
| Average night temperature (°C) | 0.2 | 5.2 | 8.5 | 11.8 | 14.9 | 16.0 | 16.9 | 16.2 | 15.0 | 11.7 | 7.9 | 4.2 |
| Absolute minimum temperature (°C) | -5.4 | 1.5 | 3.4 | 6.7 | 11.0 | 12.4 | 13.7 | 11.6 | 10.5 | 7.6 | 1.8 | -2.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 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 | 13.7 | 13.6 | 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) | 5.6 | 6.9 | 7.1 | 9.8 | 9.1 | 8.0 | 9.0 | 9.3 | 9.7 | 5.7 | 7.3 | 6.6 |
| Precipitation (mm) | 8 | 31 | 62 | 49 | 76 | 226 | 199 | 231 | 67 | 132 | 23 | 17 |
| Sunny days | 18 | 9 | 5 | 11 | 10 | 4 | 2 | 0 | 4 | 3 | 10 | 13 |
| Rainy days | 10 | 18 | 26 | 19 | 21 | 26 | 29 | 31 | 26 | 28 | 20 | 18 |
| Snow days | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Heikan is at