December · Vietnam
Best time to visit Ha Long Bay in December Weather, crowds & prices
Weather in Ha Long Bay in December
Average temperature 17°C, 7 mm of rain, about 6 days with 6+ hours of sunshine and 75% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
December score
7.8/10
Ranked #2 of 12 months
- Avg temp
- 17°C
- Rainfall
- 7 mm
- Humidity
- 75%
- Days with 6h+ sun
- 6
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
December in Ha Long Bay scores 7.8/10 for nature and wildlife travel - one of the top 12-month picks (#2). Expect around 17°C, 7 mm of rain, and roughly 6 days with 6+ hours of sunshine this month.
Ha Long Bay's limestone towers rise from green water, with overnight junks, cave visits, and kayaking among the islands.
December holds up well in Ha Long Bay — 2nd best month
Temperatures hover around 17°C (62°F) — the kind of month where neither heat nor cold forces the schedule.
At just 7 mm for the month, rain will not shape your plans; you get about 6 days with 6+ hours of sunshine and 10.7 hours of daylight.
That is 7.8/10 on the same scale — 2nd of 12 months, versus 8/10 for the best month here.
Pack layers you can shed by midday plus one warm layer for the evening, footwear you can get muddy.
Expect peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Ha Long Bay in December?
- In December, Ha Long Bay averages 17°C, 7 mm of rain, and about 6 days with 6+ hours of sunshine. Its climate-comfort score is 7.8/10.
- Is December a good time to visit Ha Long Bay?
- December earns a 7.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Ha Long Bay in December?
- Expect about 7 mm of rain in December. Average humidity is 75% and there are about 6 days with 6+ hours of sunshine.
Curated in Ha Long Bay
Tickets & experiences
Things to do in Ha Long Bay
Ha Long Bay, Vietnam. Live activities and tours from GetYourGuide, matched to this destination.