Average annual temperature is 16.6 °C
Absolute maximum temperature: 38.8 °C
Absolute minimum temperature: -8.6 °C
Number of sunny days: 231 days
Number of rainy days: 131 days
Number of snow days: 3 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) | 17.3 | 16.4 | 28.6 | 32.3 | 35.0 | 37.6 | 36.7 | 38.8 | 33.1 | 28.4 | 28.6 | 22.7 |
| Average daytime temperature (°C) | 8.9 | 10.4 | 19.0 | 22.2 | 26.9 | 32.2 | 33.4 | 33.3 | 27.8 | 23.9 | 15.8 | 8.1 |
| Average temperature (°C) | 2.8 | 5.3 | 12.8 | 16.8 | 21.9 | 26.7 | 28.7 | 28.3 | 23.5 | 18.3 | 10.4 | 2.7 |
| Average night temperature (°C) | -2.6 | 0.2 | 7.1 | 11.9 | 17.4 | 21.7 | 24.8 | 23.7 | 19.5 | 13.6 | 5.4 | -2.1 |
| Absolute minimum temperature (°C) | -7.3 | -4.4 | 1.3 | 4.6 | 10.7 | 15.9 | 21.5 | 18.0 | 14.4 | 8.4 | -2.0 | -8.6 |
| 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 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.3 | 14.1 | 13.4 | 12.4 | 11.3 | 10.4 | 10.0 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.4 | 5.8 | 7.9 | 8.2 | 6.8 | 8.2 | 9.3 | 10.1 | 7.1 | 7.7 | 6.9 | 6.9 |
| Precipitation (mm) | 18 | 30 | 24 | 65 | 102 | 83 | 250 | 102 | 168 | 30 | 29 | 37 |
| Sunny days | 27 | 21 | 25 | 21 | 15 | 15 | 11 | 18 | 11 | 23 | 22 | 22 |
| Rainy days | 3 | 7 | 6 | 9 | 16 | 15 | 20 | 13 | 19 | 8 | 8 | 7 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
The best time to visit Heyan during the most sunny months:
The largest precipitation sum in Heyan is at