Ha Long Bay weather in December 2025

Expect daytime maximum temperatures of 22°C in Ha Long Bay in December based on long-term weather averages. There are 5 hours of sunshine per day on average.

  • 22°C maximum daytime temperature in December in Ha Long Bay22
    22°C max day temperature
  • 5 hours of sunshine per day
  • 7 days with some rainfall in December in Ha Long Bay7
    7 days with some rainfall
  • 14°C minimum night-time temperature in December in Ha Long Bay14
    14°C min night temperature
  • 11 hours of daylight per day in December in Ha Long Bay11
    11 hours of daylight per day
  • No heat & humidity in December in Ha Long Bay0
    No heat & humidity
  • 24 mm monthly rainfall in December in Ha Long Bay24
    24 mm of monthly rainfall
  • UV (maximum) index 7 (High) in December in Ha Long Bay7
    7 (High) UV index
  • 22°C sea temperature in December in Ha Long Bay22
    22°C sea temperature

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The December weather guide for Vietnam (Ha Long Bay) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Ha Long Bay in December?

Daytime temperatures usually reach 22°C in Ha Long Bay in December, falling to 14°C at night.

How sunny is it in Ha Long Bay in December?

There are normally 5 hours of bright sunshine each day in Ha Long Bay in December - that's 41% of daylight hours.

How warm is the sea around Ha Long Bay in December?

The average sea temperature around Ha Long Bay in December is 22°C.

Does it rain in Ha Long Bay in December?

There are usually 7 days with some rain in Ha Long Bay in December and the average monthly rainfall is 24mm.

Ha Long Bay December sunrise & sunset times

Browse the sunrise and sunset times for Ha Long Bay in December 2025. Select a month to view Ha Long Bay sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 06:12 17:09
Tuesday, 16th December 2025 06:21 17:13
Wednesday, 31st December 2025 06:28 17:21

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