Average annual temperature is 4.7 °C
Absolute maximum temperature: 34.1 °C
Absolute minimum temperature: -33.4 °C
Number of sunny days: 197 days
Number of rainy days: 140 days
Number of snow days: 28 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) | 4.6 | 8.0 | 19.2 | 21.1 | 26.9 | 34.1 | 29.8 | 29.6 | 27.5 | 19.9 | 15.0 | 5.0 |
| Average daytime temperature (°C) | -11.3 | -3.4 | 7.4 | 12.9 | 20.5 | 25.4 | 26.6 | 25.2 | 21.3 | 13.4 | -4.3 | -11.1 |
| Average temperature (°C) | -16.4 | -9.6 | 1.0 | 6.4 | 14.3 | 20.0 | 22.0 | 21.0 | 15.7 | 7.3 | -8.9 | -16.8 |
| Average night temperature (°C) | -21.0 | -14.8 | -4.3 | 0.5 | 8.3 | 14.9 | 18.3 | 17.4 | 10.8 | 1.9 | -14.6 | -23.5 |
| Absolute minimum temperature (°C) | -31.6 | -19.8 | -11.7 | -4.7 | 1.9 | 7.9 | 13.4 | 10.9 | 3.9 | -4.0 | -25.4 | -33.4 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 |
| Daylight mean duration (h) | 9.2 | 10.4 | 11.9 | 13.5 | 14.9 | 15.6 | 15.3 | 14.1 | 12.5 | 10.9 | 9.5 | 8.8 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 6.7 | 7.7 | 9.3 | 9.1 | 10.8 | 10.6 | 9.1 | 8.8 | 9.5 | 8.8 | 4.9 | 6.3 |
| Precipitation (mm) | 3 | 3 | 12 | 50 | 32 | 89 | 283 | 218 | 27 | 21 | 83 | 7 |
| Sunny days | 25 | 24 | 25 | 19 | 15 | 7 | 1 | 7 | 17 | 19 | 13 | 25 |
| Rainy days | 1 | 0 | 3 | 10 | 16 | 23 | 30 | 24 | 13 | 12 | 7 | 1 |
| Snow days | 5 | 4 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 5 |
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