👍December is a great time to visit Ha Long Bay — expect pleasantly warm days around 70°F (lows near 60°F), minimal rain, decent sunshine.
December Climate
Why This Matches
Based on your December search preferences
Avg highs of 70°F
6 rain days expected
6.3 hours of sunshine per day
69% average humidity
Year-Round Climate
Temperature
Sunshine
Rainfall
Best Time to Visit Ha Long Bay
The best time to visit Ha Long Bay is December, with highs around 70°F, moderate rainfall.
Weather Risks
Rainy season
May, June, July, August, September
Monsoon season
Varies by area — typically May–October
Very high humidity
March, April, May, July, August
What to Pack
Based on December conditions in Ha Long Bay
Light layers — t-shirts with a light jacket for evenings
A light rain jacket is worth having, just in case
Sunscreen and sunglasses — UV can be strong even through clouds
Insect repellent — mosquitoes are active in humid conditions
December in Ha Long Bay
Flight prices unavailable for this route
Nightly hotel rates
Budget
$14–$27
Mid-Range
$36–$81
Luxury
$108–$252
About Ha Long Bay
Ha Long Bay is one of the natural wonders of the world, a vast emerald seascape studded with thousands of limestone karst islands rising sheer from the water. The classic way to experience it is aboard a traditional-style junk boat, cruising between the towering pillars, dropping anchor in quiet coves, and waking to mist drifting over the peaks. It is the kind of scenery that lives up to every photograph.
Beyond the cruising, the bay rewards exploration. Kayaks slip into hidden lagoons and through sea caves, some islands hold vast illuminated grottoes, and floating fishing villages offer a glimpse of life on the water. An overnight cruise is well worth it, letting you see the bay after the day-trip crowds have gone.
The most reliable weather comes in spring and autumn, around March to April and October to November, with comfortable temperatures and clearer skies. Summers are hot and see passing storms, while winters can be cool and misty, lending the karsts an atmospheric haze.