Average annual temperature is 9.8 °C
Absolute maximum temperature: 34.3 °C
Absolute minimum temperature: -27.1 °C
Number of sunny days: 235 days
Number of rainy days: 113 days
Number of snow days: 17 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) | 7.4 | 11.1 | 22.4 | 25.3 | 31.0 | 34.3 | 32.9 | 32.2 | 30.9 | 24.6 | 23.5 | 12.6 |
| Average daytime temperature (°C) | -3.1 | 2.4 | 11.6 | 16.5 | 24.7 | 28.9 | 29.2 | 27.9 | 25.4 | 18.1 | 3.6 | -5.1 |
| Average temperature (°C) | -7.8 | -2.9 | 4.8 | 10.5 | 18.4 | 22.9 | 25.1 | 23.8 | 19.9 | 12.6 | -0.9 | -9.4 |
| Average night temperature (°C) | -12.6 | -7.2 | -0.7 | 4.8 | 12.6 | 17.7 | 21.6 | 20.2 | 14.9 | 8.0 | -4.8 | -14.3 |
| Absolute minimum temperature (°C) | -22.1 | -11.2 | -7.2 | -3.3 | 7.1 | 12.6 | 18.2 | 14.7 | 8.1 | 2.4 | -12.1 | -27.1 |
| 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 | 14.9 | 13.8 | 12.5 | 11.1 | 9.9 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 6.9 | 8.0 | 9.9 | 8.6 | 10.1 | 10.9 | 9.1 | 9.5 | 9.4 | 8.6 | 6.7 | 6.4 |
| Precipitation (mm) | 6 | 4 | 14 | 48 | 41 | 78 | 215 | 123 | 68 | 29 | 69 | 16 |
| Sunny days | 25 | 24 | 26 | 19 | 18 | 14 | 13 | 15 | 18 | 22 | 17 | 24 |
| Rainy days | 2 | 1 | 5 | 11 | 13 | 16 | 18 | 16 | 12 | 9 | 9 | 1 |
| Snow days | 4 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 6 |
The best time to visit Heyan during the most sunny months:
The largest precipitation sum in Heyan is at