Average annual temperature is 18.5 °C
Absolute maximum temperature: 36.6 °C
Absolute minimum temperature: -2.1 °C
Number of sunny days: 158 days
Number of rainy days: 206 days
Number of snow days: 1 day
Look at detailed online map of Heliwan
* Weather data for Heliwan 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) | 16.5 | 19.1 | 24.2 | 35.0 | 34.8 | 35.2 | 36.6 | 34.2 | 34.5 | 25.8 | 23.9 | 17.7 |
| Average daytime temperature (°C) | 11.2 | 14.8 | 18.8 | 24.7 | 28.2 | 29.2 | 32.1 | 30.9 | 29.1 | 22.3 | 18.7 | 13.1 |
| Average temperature (°C) | 6.9 | 11.1 | 14.4 | 19.6 | 23.3 | 24.8 | 27.3 | 26.9 | 24.9 | 18.8 | 15.0 | 9.3 |
| Average night temperature (°C) | 2.9 | 7.7 | 10.3 | 14.8 | 18.9 | 21.0 | 23.5 | 23.3 | 21.4 | 15.9 | 11.3 | 5.5 |
| Absolute minimum temperature (°C) | -2.1 | 5.0 | 5.5 | 8.7 | 14.0 | 17.8 | 19.2 | 20.1 | 18.8 | 12.9 | 7.1 | 0.8 |
| 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 | 14.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.5 | 11.1 | 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) | 5.6 | 4.5 | 5.9 | 8.3 | 7.2 | 6.7 | 8.4 | 8.6 | 7.4 | 4.4 | 5.0 | 4.7 |
| Precipitation (mm) | 5 | 23 | 67 | 100 | 94 | 51 | 328 | 222 | 95 | 70 | 31 | 2 |
| Sunny days | 20 | 13 | 5 | 12 | 10 | 14 | 13 | 8 | 11 | 11 | 18 | 23 |
| Rainy days | 10 | 15 | 26 | 18 | 21 | 16 | 18 | 23 | 19 | 20 | 12 | 8 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Heliwan during the most sunny months:
The largest precipitation sum in Heliwan is at