Average annual temperature is 22.8 °C
Absolute maximum temperature: 37.4 °C
Absolute minimum temperature: 3.0 °C
Number of sunny days: 139 days
Number of rainy days: 226 days
Look at detailed online map of Helong
* Weather data for Helong 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) | 27.8 | 29.1 | 32.5 | 31.5 | 37.4 | 34.6 | 36.1 | 35.1 | 33.8 | 34.3 | 30.8 | 30.3 |
| Average daytime temperature (°C) | 20.2 | 22.4 | 25.5 | 27.0 | 30.3 | 31.1 | 32.7 | 32.4 | 30.7 | 28.5 | 26.5 | 22.6 |
| Average temperature (°C) | 15.2 | 16.4 | 19.0 | 22.2 | 25.7 | 27.4 | 28.9 | 28.5 | 27.3 | 24.8 | 21.1 | 17.1 |
| Average night temperature (°C) | 10.9 | 12.3 | 14.5 | 18.6 | 22.4 | 24.8 | 25.7 | 25.6 | 24.5 | 21.6 | 16.6 | 12.6 |
| Absolute minimum temperature (°C) | 3.0 | 7.0 | 9.1 | 13.8 | 17.9 | 23.6 | 24.5 | 24.1 | 22.9 | 17.9 | 9.7 | 4.9 |
| 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) | 6.1 | 7.4 | 8.2 | 7.6 | 8.4 | 8.1 | 10.0 | 8.6 | 7.8 | 7.2 | 8.9 | 7.7 |
| Precipitation (mm) | 27 | 36 | 59 | 102 | 184 | 388 | 246 | 224 | 296 | 107 | 19 | 11 |
| Sunny days | 17 | 17 | 20 | 11 | 7 | 0 | 5 | 0 | 1 | 14 | 25 | 22 |
| Rainy days | 14 | 11 | 11 | 19 | 24 | 30 | 26 | 31 | 29 | 17 | 5 | 9 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Helong is at