Average annual temperature is 19.0 °C
Absolute maximum temperature: 36.8 °C
Absolute minimum temperature: -5.2 °C
Number of sunny days: 115 days
Number of rainy days: 250 days
Look at detailed online map of Helian
* Weather data for Helian 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) | 22.2 | 24.1 | 26.4 | 29.7 | 34.8 | 32.5 | 36.8 | 34.0 | 32.3 | 30.3 | 28.8 | 25.6 |
| Average daytime temperature (°C) | 14.2 | 16.7 | 21.0 | 24.3 | 27.7 | 30.0 | 32.8 | 30.7 | 30.1 | 25.0 | 21.2 | 15.8 |
| Average temperature (°C) | 8.6 | 11.5 | 15.4 | 19.1 | 23.0 | 25.4 | 27.7 | 26.1 | 25.3 | 20.2 | 15.2 | 9.6 |
| Average night temperature (°C) | 3.6 | 7.1 | 10.7 | 15.1 | 19.3 | 22.0 | 24.0 | 23.0 | 21.8 | 16.3 | 10.1 | 4.6 |
| Absolute minimum temperature (°C) | -3.8 | 1.2 | 4.7 | 7.6 | 13.8 | 18.1 | 22.6 | 21.2 | 20.1 | 11.5 | 2.9 | -5.2 |
| 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) | 10.7 | 11.3 | 12.0 | 12.8 | 13.4 | 13.8 | 13.6 | 13.0 | 12.3 | 11.5 | 10.9 | 10.5 |
| 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) | 6.5 | 6.1 | 5.7 | 6.9 | 8.2 | 7.5 | 10.6 | 9.3 | 8.9 | 6.7 | 7.0 | 6.8 |
| Precipitation (mm) | 107 | 115 | 227 | 280 | 288 | 287 | 149 | 247 | 212 | 47 | 50 | 37 |
| Sunny days | 15 | 15 | 10 | 7 | 8 | 3 | 10 | 1 | 1 | 9 | 18 | 18 |
| Rainy days | 16 | 13 | 21 | 23 | 23 | 27 | 21 | 30 | 29 | 22 | 12 | 13 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Helian during the most sunny months:
The largest precipitation sum in Helian is at