Weather in Ha Long: December
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Average day temperature: | 69.5°F |
| Average night temperature: | 64.3°F | |
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Sea water temperature: | 71.2°F |
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Number of sunny days: | 9 days |
| Day length: | 10.9 - 11.0 hours | |
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Number of rainy days: | 1 day |
| Precipitation totals: | 0.9 in. | |
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forecast
| Ha Long |
temperature
| Ha Long |
Air temperature in December, °F
The highest day temperature during December of 2025 was 76°F. At the same time the lowest night temperature was 55°F. Daily and nightly averages during December were 70.2°F and 64.6°F.
Sea water temperature in Ha Long in December, °F
The average sea water temperature in December of 2025 was 71.3°F. The highest and lowest sea temperatures during the month were 73.2°F and 69.6°F.
Mostly all days in December are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in December, in.
Precipitation total value in Ha Long in December is 0.8 in. It makes december the most dry month of the year.
The average wind speed value in December is 8.1 mph
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in December is: 4.9.
Best time for vacation in Ha Long
Ha Long on a weather map
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