Average annual temperature is 5.1 °C
Absolute maximum temperature: 21.8 °C
Absolute minimum temperature: -23.8 °C
Number of sunny days: 103 days
Number of rainy days: 148 days
Number of snow days: 114 days
Look at detailed online map of Halong
* Weather data for Halong 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) | 11.7 | 12.1 | 3.5 | 7.1 | 21.1 | 21.3 | 20.2 | 21.8 | 20.2 | 18.4 | 11.0 | 8.5 |
| Average daytime temperature (°C) | 5.9 | 5.7 | 0.9 | 4.4 | 9.6 | 18.3 | 18.2 | 18.6 | 18.1 | 12.3 | 7.2 | 2.9 |
| Average temperature (°C) | 0.8 | 0.1 | -4.3 | 0.2 | 4.7 | 12.3 | 13.6 | 14.0 | 13.0 | 6.9 | 2.3 | -2.0 |
| Average night temperature (°C) | -5.5 | -6.5 | -11.7 | -4.7 | -1.0 | 6.4 | 10.1 | 10.1 | 7.6 | 1.2 | -3.1 | -8.5 |
| Absolute minimum temperature (°C) | -13.8 | -16.6 | -23.8 | -13.9 | -7.5 | 2.4 | 8.4 | 4.5 | 4.6 | -5.3 | -6.3 | -13.3 |
| 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 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.5 | 11.1 | 12.0 | 12.9 | 13.7 | 14.0 | 13.9 | 13.2 | 12.3 | 11.4 | 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) | 9.6 | 9.4 | 10.0 | 10.9 | 11.4 | 11.0 | 9.9 | 9.9 | 11.3 | 10.4 | 9.7 | 9.1 |
| Precipitation (mm) | 0 | 43 | 74 | 122 | 100 | 200 | 240 | 196 | 41 | 70 | 21 | 15 |
| Sunny days | 31 | 17 | 6 | 4 | 4 | 1 | 0 | 1 | 5 | 1 | 11 | 22 |
| Rainy days | 0 | 2 | 1 | 2 | 14 | 29 | 31 | 30 | 25 | 13 | 1 | 0 |
| Snow days | 0 | 9 | 24 | 24 | 13 | 0 | 0 | 0 | 0 | 17 | 18 | 9 |
The largest precipitation sum in Halong is at