Average annual temperature is 17.1 °C
Absolute maximum temperature: 36.6 °C
Absolute minimum temperature: -7.5 °C
Number of sunny days: 209 days
Number of rainy days: 153 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) | 20.0 | 17.8 | 27.8 | 33.3 | 32.3 | 34.1 | 34.6 | 36.6 | 33.8 | 27.8 | 28.1 | 23.4 |
| Average daytime temperature (°C) | 10.5 | 11.2 | 19.7 | 23.6 | 26.8 | 29.5 | 32.2 | 32.5 | 27.9 | 24.0 | 17.0 | 9.2 |
| Average temperature (°C) | 4.4 | 6.4 | 14.0 | 18.1 | 22.0 | 25.2 | 28.4 | 28.0 | 24.1 | 18.7 | 11.5 | 4.4 |
| Average night temperature (°C) | -0.9 | 1.6 | 9.0 | 13.2 | 17.9 | 21.3 | 25.5 | 23.8 | 20.7 | 14.3 | 6.5 | 0.0 |
| Absolute minimum temperature (°C) | -6.8 | -3.6 | 1.7 | 4.8 | 11.8 | 16.0 | 21.5 | 18.7 | 16.3 | 7.9 | -2.6 | -7.5 |
| 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) | 10.3 | 11.0 | 12.0 | 13.0 | 13.8 | 14.2 | 14.0 | 13.3 | 12.4 | 11.4 | 10.5 | 10.1 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 7.1 | 5.5 | 7.3 | 7.7 | 6.5 | 7.5 | 8.8 | 10.3 | 6.1 | 7.2 | 7.3 | 6.7 |
| Precipitation (mm) | 16 | 37 | 28 | 130 | 182 | 153 | 174 | 87 | 136 | 42 | 43 | 60 |
| Sunny days | 27 | 15 | 22 | 16 | 10 | 14 | 11 | 15 | 12 | 23 | 23 | 21 |
| Rainy days | 4 | 12 | 9 | 14 | 21 | 16 | 20 | 16 | 18 | 8 | 7 | 8 |
| Snow days | 0 | 1 | 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