Is Hạ Long hot in December?
Days are typically mild at 22.3°C, while nights average 15.3°C.
Vietnam · 1991–2020 normal
Hạ Long in
December.
Typical December weather in Hạ Long: 22.3°C by day, 15.3°C at night, 27 mm of rain over 3.4 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high22.3°C
Typical low15.3°C
Rain27 mm
Wet days3.4
In the year-round weather comparison, December scores 93 out of 100, the highest of the year. Daylight is calculated as 10 h 52 from latitude 20.95°. Open-water sea temperature is 21.9°C (32 km from the place centre).
December at a glance
What is Hạ Long like in December?
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Does it rain much?
The measured monthly average is 27 mm across about 3 wet days.
How much daylight is there?
There are about 10 h 52 between sunrise and sunset at mid-month, calculated from the place latitude.
Is December a good time to visit?
December is the strongest month in our year-round weather comparison.
Event window
Warm sea in December
The nearest open-water NOAA OISST 1991–2020 cell averages 21.9°C in December. A sheltered bay can run warmer than that open-water cell.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 1580410
- NOAA station
- VMM00048826 · PHU LIEN
- Station distance
- 48.7 km from the place centre
- Coverage
- Good coverage · 24 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for Hạ Long is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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