Average annual temperature is 17.1 °C
Absolute maximum temperature: 34.0 °C
Absolute minimum temperature: -4.7 °C
Number of sunny days: 103 days
Number of rainy days: 260 days
Number of snow days: 2 days
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) | 22.8 | 17.2 | 23.4 | 28.9 | 32.0 | 31.6 | 34.0 | 32.7 | 32.6 | 28.5 | 25.8 | 24.5 |
| Average daytime temperature (°C) | 11.3 | 10.6 | 16.6 | 21.5 | 25.5 | 28.1 | 31.2 | 29.7 | 28.1 | 22.6 | 17.2 | 11.7 |
| Average temperature (°C) | 6.8 | 7.2 | 12.3 | 17.1 | 21.2 | 24.1 | 27.1 | 25.8 | 23.8 | 18.3 | 13.0 | 7.5 |
| Average night temperature (°C) | 2.4 | 4.2 | 8.2 | 13.3 | 17.5 | 20.9 | 23.7 | 22.5 | 20.4 | 14.7 | 9.4 | 3.3 |
| Absolute minimum temperature (°C) | -3.3 | -0.6 | 4.3 | 6.5 | 11.8 | 17.6 | 21.2 | 17.5 | 16.6 | 11.4 | 3.5 | -4.7 |
| 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 | 13.8 | 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) | 5.4 | 3.1 | 5.0 | 6.6 | 6.6 | 6.9 | 9.9 | 9.6 | 7.7 | 6.0 | 5.1 | 5.2 |
| Precipitation (mm) | 18 | 106 | 161 | 246 | 209 | 181 | 131 | 188 | 36 | 55 | 142 | 47 |
| Sunny days | 20 | 5 | 5 | 7 | 3 | 3 | 5 | 5 | 8 | 14 | 13 | 15 |
| Rainy days | 9 | 23 | 26 | 23 | 28 | 27 | 26 | 26 | 22 | 17 | 17 | 16 |
| Snow days | 2 | 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