Average annual temperature is 18.4 °C
Absolute maximum temperature: 37.5 °C
Absolute minimum temperature: -2.2 °C
Number of sunny days: 145 days
Number of rainy days: 219 days
Number of snow days: 1 day
Look at detailed online map of Heiyan
* Weather data for Heiyan 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) | 21.9 | 16.8 | 25.1 | 29.8 | 33.4 | 33.4 | 35.6 | 37.5 | 36.5 | 30.0 | 27.5 | 20.8 |
| Average daytime temperature (°C) | 11.7 | 11.1 | 18.1 | 22.6 | 26.8 | 29.7 | 33.0 | 32.8 | 30.1 | 23.9 | 18.2 | 11.7 |
| Average temperature (°C) | 7.2 | 8.0 | 13.6 | 18.2 | 22.6 | 25.8 | 29.3 | 28.6 | 25.7 | 19.8 | 14.0 | 7.7 |
| Average night temperature (°C) | 2.7 | 5.1 | 9.4 | 14.5 | 19.0 | 22.7 | 26.2 | 25.0 | 22.1 | 16.3 | 10.3 | 4.2 |
| Absolute minimum temperature (°C) | -2.2 | 0.1 | 5.2 | 7.8 | 14.2 | 17.8 | 24.0 | 18.8 | 17.9 | 12.3 | 4.3 | -2.1 |
| 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 | 13.6 | 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) | 5.5 | 3.0 | 5.7 | 6.7 | 7.2 | 7.5 | 9.5 | 9.3 | 8.1 | 5.7 | 5.7 | 5.7 |
| Precipitation (mm) | 16 | 119 | 148 | 328 | 282 | 215 | 154 | 143 | 46 | 55 | 83 | 52 |
| Sunny days | 22 | 7 | 7 | 9 | 6 | 10 | 8 | 14 | 13 | 17 | 15 | 17 |
| Rainy days | 8 | 21 | 24 | 21 | 25 | 20 | 23 | 17 | 17 | 14 | 15 | 14 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Heiyan during the most sunny months:
The largest precipitation sum in Heiyan is at