Average annual temperature is 17.8 °C
Absolute maximum temperature: 31.3 °C
Absolute minimum temperature: 3.8 °C
Number of sunny days: 143 days
Number of rainy days: 222 days
Look at detailed online map of Helu
* Weather data for Helu 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) | 22.6 | 24.7 | 25.9 | 29.9 | 31.3 | 30.9 | 29.3 | 26.4 | 27.4 | 25.3 | 23.0 | 22.0 |
| Average daytime temperature (°C) | 18.2 | 21.0 | 22.9 | 26.8 | 26.1 | 25.5 | 25.5 | 24.6 | 24.8 | 22.6 | 21.0 | 18.1 |
| Average temperature (°C) | 12.0 | 15.2 | 17.1 | 20.8 | 20.6 | 20.7 | 20.9 | 20.1 | 19.9 | 17.9 | 15.5 | 13.1 |
| Average night temperature (°C) | 6.4 | 9.9 | 12.0 | 15.3 | 15.9 | 17.2 | 17.4 | 17.2 | 16.3 | 14.4 | 11.1 | 8.8 |
| Absolute minimum temperature (°C) | 3.8 | 7.3 | 9.6 | 10.2 | 13.3 | 15.7 | 16.5 | 16.2 | 15.2 | 12.4 | 7.9 | 6.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 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) | 10.9 | 11.4 | 12.0 | 12.7 | 13.3 | 13.6 | 13.4 | 12.9 | 12.3 | 11.6 | 11.0 | 10.7 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 9.9 | 9.9 | 10.6 | 11.3 | 11.0 | 10.2 | 9.5 | 8.2 | 10.2 | 8.8 | 8.9 | 8.4 |
| Precipitation (mm) | 1 | 16 | 12 | 14 | 117 | 249 | 239 | 277 | 188 | 159 | 18 | 38 |
| Sunny days | 29 | 20 | 18 | 20 | 12 | 1 | 1 | 0 | 0 | 3 | 20 | 19 |
| Rainy days | 2 | 8 | 13 | 10 | 19 | 29 | 30 | 31 | 30 | 28 | 10 | 12 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Helu is at