Average annual temperature is 10.8 °C
Absolute maximum temperature: 33.8 °C
Absolute minimum temperature: -20.6 °C
Number of sunny days: 244 days
Number of rainy days: 107 days
Number of snow days: 14 days
Look at detailed online map of Heyan
* Weather data for Heyan 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) | 7.1 | 9.5 | 19.6 | 21.7 | 30.6 | 33.8 | 33.8 | 32.1 | 30.3 | 24.3 | 22.0 | 12.3 |
| Average daytime temperature (°C) | -1.8 | 2.7 | 11.2 | 16.5 | 24.6 | 29.2 | 29.6 | 28.2 | 26.2 | 19.0 | 5.0 | -2.7 |
| Average temperature (°C) | -6.2 | -2.1 | 5.0 | 10.9 | 18.8 | 23.6 | 25.7 | 24.4 | 20.9 | 13.9 | 0.5 | -6.8 |
| Average night temperature (°C) | -10.6 | -5.8 | 0.0 | 6.0 | 13.6 | 18.8 | 22.6 | 20.9 | 16.3 | 9.5 | -3.6 | -11.0 |
| Absolute minimum temperature (°C) | -20.6 | -9.2 | -6.1 | -0.3 | 8.5 | 14.3 | 19.0 | 15.7 | 10.9 | 3.1 | -9.5 | -20.1 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.3 | 8.0 | 10.2 | 8.5 | 9.9 | 11.2 | 9.6 | 9.6 | 9.6 | 8.2 | 6.9 | 6.2 |
| Precipitation (mm) | 5 | 3 | 8 | 55 | 55 | 43 | 140 | 98 | 46 | 35 | 57 | 14 |
| Sunny days | 27 | 26 | 24 | 17 | 22 | 16 | 12 | 16 | 19 | 22 | 20 | 23 |
| Rainy days | 4 | 0 | 6 | 13 | 9 | 14 | 19 | 15 | 11 | 9 | 6 | 1 |
| Snow days | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 7 |
The best time to visit Heyan during the most sunny months:
The largest precipitation sum in Heyan is at