Average annual temperature is 14.5 °C
Absolute maximum temperature: 31.1 °C
Absolute minimum temperature: -4.4 °C
Number of sunny days: 93 days
Number of rainy days: 267 days
Number of snow days: 5 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) | 18.3 | 17.7 | 19.9 | 29.0 | 30.7 | 29.8 | 30.7 | 29.1 | 31.1 | 27.5 | 23.5 | 22.8 |
| Average daytime temperature (°C) | 7.7 | 9.4 | 14.6 | 20.6 | 23.4 | 24.2 | 27.2 | 26.4 | 25.4 | 19.1 | 15.7 | 10.1 |
| Average temperature (°C) | 3.7 | 5.9 | 10.6 | 15.6 | 18.9 | 20.2 | 22.7 | 22.2 | 20.8 | 15.3 | 11.6 | 6.3 |
| Average night temperature (°C) | -0.1 | 2.7 | 6.5 | 11.4 | 14.9 | 16.9 | 19.2 | 18.9 | 17.1 | 12.1 | 7.7 | 2.3 |
| Absolute minimum temperature (°C) | -4.1 | 0.1 | 1.0 | 6.7 | 8.6 | 13.0 | 14.4 | 15.4 | 13.0 | 8.3 | 1.4 | -4.4 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.6 | 11.2 | 12.0 | 12.8 | 13.5 | 13.9 | 13.7 | 13.1 | 12.3 | 11.5 | 10.8 | 10.4 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 4.5 | 3.0 | 4.2 | 8.0 | 7.5 | 6.3 | 8.3 | 9.1 | 8.7 | 5.3 | 5.7 | 4.0 |
| Precipitation (mm) | 18 | 70 | 101 | 149 | 199 | 259 | 300 | 171 | 187 | 110 | 43 | 25 |
| Sunny days | 18 | 3 | 4 | 8 | 3 | 5 | 6 | 2 | 9 | 7 | 10 | 18 |
| Rainy days | 8 | 25 | 27 | 22 | 28 | 25 | 25 | 29 | 21 | 24 | 20 | 13 |
| Snow days | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Heyan during the most sunny months:
The largest precipitation sum in Heyan is at