Average annual temperature is 7.3 °C
Absolute maximum temperature: 31.3 °C
Absolute minimum temperature: -27.2 °C
Number of sunny days: 208 days
Number of rainy days: 141 days
Number of snow days: 16 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) | 2.5 | 8.0 | 17.9 | 20.0 | 24.0 | 31.2 | 31.3 | 30.5 | 27.2 | 20.8 | 18.1 | 7.0 |
| Average daytime temperature (°C) | -5.7 | -0.1 | 8.2 | 12.4 | 19.3 | 24.2 | 26.6 | 25.2 | 22.5 | 14.9 | 1.3 | -6.8 |
| Average temperature (°C) | -10.1 | -5.2 | 2.2 | 7.2 | 14.2 | 19.1 | 22.5 | 21.3 | 17.7 | 10.7 | -2.7 | -10.6 |
| Average night temperature (°C) | -14.6 | -9.4 | -2.1 | 2.6 | 9.6 | 14.9 | 19.2 | 18.0 | 13.4 | 6.7 | -6.4 | -15.2 |
| Absolute minimum temperature (°C) | -25.7 | -15.0 | -8.9 | -3.4 | 4.9 | 11.0 | 15.9 | 13.8 | 7.7 | 0.1 | -14.4 | -27.2 |
| 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) | 7.1 | 8.1 | 9.4 | 8.4 | 9.8 | 10.8 | 8.5 | 9.0 | 9.7 | 8.3 | 6.1 | 5.2 |
| Precipitation (mm) | 6 | 5 | 28 | 89 | 112 | 159 | 189 | 205 | 27 | 62 | 89 | 30 |
| Sunny days | 26 | 27 | 22 | 16 | 19 | 9 | 8 | 9 | 21 | 18 | 15 | 18 |
| Rainy days | 3 | 0 | 8 | 14 | 12 | 21 | 23 | 22 | 9 | 13 | 11 | 5 |
| Snow days | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 8 |
The best time to visit Heyan during the most sunny months:
The largest precipitation sum in Heyan is at