Average annual temperature is 18.5 °C
Absolute maximum temperature: 35.4 °C
Absolute minimum temperature: -1.9 °C
Number of sunny days: 117 days
Number of rainy days: 248 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) | 16.7 | 20.9 | 23.4 | 32.4 | 31.4 | 33.9 | 35.4 | 34.8 | 35.2 | 27.1 | 24.4 | 18.9 |
| Average daytime temperature (°C) | 11.2 | 15.2 | 18.4 | 23.9 | 26.6 | 27.6 | 31.3 | 31.5 | 29.2 | 22.3 | 18.9 | 12.9 |
| Average temperature (°C) | 7.0 | 11.3 | 14.4 | 19.4 | 22.4 | 24.0 | 27.1 | 27.5 | 25.1 | 19.0 | 15.1 | 9.3 |
| Average night temperature (°C) | 2.7 | 7.8 | 10.3 | 14.9 | 18.9 | 20.7 | 23.5 | 24.0 | 21.6 | 16.0 | 11.6 | 5.4 |
| Absolute minimum temperature (°C) | -1.9 | 4.9 | 5.0 | 8.5 | 14.2 | 16.6 | 18.9 | 20.0 | 18.7 | 10.6 | 5.8 | 0.1 |
| 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 | 14.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.5 | 11.2 | 12.0 | 12.9 | 13.6 | 14.0 | 13.8 | 13.2 | 12.3 | 11.5 | 10.7 | 10.3 |
| 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) | 4.8 | 4.1 | 5.3 | 7.5 | 7.0 | 6.0 | 8.6 | 9.3 | 7.6 | 5.2 | 5.2 | 4.1 |
| Precipitation (mm) | 11 | 35 | 154 | 187 | 220 | 254 | 427 | 169 | 214 | 199 | 109 | 12 |
| Sunny days | 18 | 8 | 4 | 7 | 6 | 10 | 11 | 7 | 12 | 5 | 11 | 18 |
| Rainy days | 13 | 20 | 27 | 23 | 25 | 20 | 20 | 24 | 18 | 26 | 19 | 13 |
| Snow days | 0 | 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