Average annual temperature is 2.6 °C
Absolute maximum temperature: 32.8 °C
Absolute minimum temperature: -39.6 °C
Number of sunny days: 206 days
Number of rainy days: 123 days
Number of snow days: 36 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) | -2.4 | 5.0 | 16.1 | 21.0 | 29.1 | 32.8 | 30.9 | 31.4 | 29.3 | 20.3 | 2.5 | -0.8 |
| Average daytime temperature (°C) | -19.0 | -9.5 | 4.4 | 10.4 | 19.1 | 23.8 | 27.0 | 25.1 | 19.2 | 10.5 | -6.8 | -16.7 |
| Average temperature (°C) | -23.7 | -14.7 | -1.0 | 4.6 | 13.0 | 18.8 | 22.5 | 20.9 | 14.4 | 5.9 | -10.0 | -20.4 |
| Average night temperature (°C) | -28.9 | -20.6 | -5.7 | -0.5 | 7.8 | 14.5 | 18.6 | 17.6 | 10.2 | 1.9 | -14.0 | -24.8 |
| Absolute minimum temperature (°C) | -39.6 | -29.7 | -13.6 | -2.7 | 0.7 | 6.9 | 15.5 | 14.1 | 5.5 | -7.0 | -22.0 | -34.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 10.0 | 12.0 | 14.0 | 15.0 | 16.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 |
| Daylight mean duration (h) | 8.7 | 10.1 | 11.9 | 13.7 | 15.3 | 16.2 | 15.8 | 14.4 | 12.6 | 10.8 | 9.2 | 8.3 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 10.0 | 12.0 | 14.0 | 15.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 6.5 | 8.3 | 8.9 | 8.6 | 10.1 | 9.5 | 10.6 | 8.4 | 8.7 | 7.8 | 5.6 | 6.1 |
| Precipitation (mm) | 3 | 2 | 19 | 24 | 64 | 145 | 136 | 209 | 100 | 33 | 25 | 8 |
| Sunny days | 26 | 20 | 22 | 21 | 14 | 6 | 8 | 6 | 11 | 25 | 22 | 25 |
| Rainy days | 0 | 0 | 2 | 8 | 17 | 24 | 23 | 25 | 19 | 5 | 0 | 0 |
| Snow days | 5 | 8 | 7 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 8 | 6 |
The best time to visit Heyan during the most sunny months:
Months with the longest average daylight duration in Heyan:
The largest precipitation sum in Heyan is at