2026 Climate Averages

Weather: Ha Long Bay — December

Conditions are pleasant for sightseeing, though you might encounter occasional showers.

👍 Climate Overview

December is a good time to visit Ha Long Bay. Warm weather with highs of 22°C—great for outdoor activities. Rainfall is rare, so you can leave the umbrella at home. Being off-peak, you'll find better deals and fewer crowds. Sea temperature of 21°C is refreshing but swimmable.

9
GoTripzi Score Excellent

Based on weather comfort, crowds, prices, and activity options

Avg High

22°C

Avg Low

17°C

Rainy days

3days

Daylight

10.9h

Rainfall

12mm

Sunshine

7.1h/day

Humidity

69%

Humid
Sun Strength

4.4

Moderate
Wind

15 km/h (gusts 31)

Sea Temp

21°C 💧 Refreshing

Is December a good time to visit Ha Long Bay?

Conditions are pleasant for sightseeing, though you might encounter occasional showers.

Now

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Feels like --
Wind --
Humidity --
UV Index --
Local time —

Air Quality

Travel Context

  • Crowds
    Moderate
  • Travel Costs Peak Rates

Daylight

Sunrise

06:21

Sunset

17:13

10.9h daylight

Visiting Ha Long Bay in December: Pros & Cons

Pros

  • Comfortable temperatures for sightseeing
  • Minimal rainfall — great for outdoor plans
  • Fewer crowds and better hotel deals

Things to Do in December

Recommended for This Weather

🚶 Walking tours & sightseeing
🚲 Cycling & bike tours
🥾 Hiking & nature trails
🍜 Food tours & culinary experiences
🎭 Cultural tours & local experiences

Ha Long Bay Weather by Month

Month Avg High Avg Low Rain Sunshine Humidity UV Index Crowds Condition
Jan 21°C 16°C 7d (34mm) 6.4h
76% Humid
4.1 Moderate
Good
Feb 21°C 17°C 6d (33mm) 5.7h
82% Very Humid
4.4 Moderate
Good
Mar 24°C 20°C 10d (31mm) 6.7h
84% Very Humid
5.3 High
Excellent
Apr 27°C 23°C 11d (59mm) 8.7h
83% Very Humid
6.8 High
Excellent
May 31°C 26°C 20d (154mm) 9.7h
83% Very Muggy
7.4 Very High
Excellent
Jun 33°C 28°C 22d (271mm) 8.7h
82% Very Muggy
7.3 Very High
Wet
Jul 33°C 28°C 23d (280mm) 9.7h
83% Very Muggy
7.7 Very High
Wet
Aug 32°C 27°C 28d (400mm) 7.7h
85% Very Muggy
6.4 High
Wet
Sep 31°C 26°C 26d (366mm) 7.8h
84% Very Muggy
6 High
Excellent
Oct 29°C 23°C 14d (156mm) 8.1h
76% Muggy
5.9 High
Excellent
Nov 27°C 21°C 7d (32mm) 8.4h
74% Humid
5.3 High
Excellent
Dec Current 22°C 17°C 3d (12mm) 7.1h
69% Humid
4.4 Moderate
Good

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Your Best MonthJanScore: 7.9
1.Jan
7.92.Jul
7.63.Dec
7.44.Jun
7.15.Feb
76.Aug
6.67.Nov
5.68.Mar
5.29.Apr
5.210.Oct
5.211.May
3.812.Sep
3.4

Where to Stay

See hotels, apartments & rentals around Ha Long Bay – live prices from Booking.com, Expedia, Vrbo and more

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Ha Long Bay

UNESCO World Heritage Bay with 1,600 limestone karst islands rising dramatically from emerald waters, overnight junk boat cruises, kayaking through caves, floating villages, and one of Vietnam's most iconic natural wonders.

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What to Pack for December

Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.

Moderate Moderate

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📋Essentials
👕Clothing
👟Footwear
🎒Accessories
🧴Toiletries & Health

Planning a trip to Ha Long Bay?

💰 Off-peak — great deals available now

Frequently Asked Questions

Is December a good time to visit Ha Long Bay?
December is typically good for visiting Ha Long Bay, with average highs of 22°C and around 3 rainy days. Plan your activities accordingly—outdoor sightseeing is best on dry days, while rainy days are perfect for museums and indoor attractions.
Does it get cold at night in Ha Long Bay in December?
Evenings in Ha Long Bay during December are mild at 17°C. A light cardigan or long sleeves for evenings is usually enough. Outdoor dining remains comfortable, making it a great time to enjoy rooftop bars and terrace restaurants.
What should I pack for Ha Long Bay in December?
With highs of 22°C and lows of 17°C in December, we recommend: Sunscreen SPF 30+, Sunglasses, Comfortable walking shoes. Layering is key as temperatures can vary between air-conditioned interiors and outdoors. Comfortable walking shoes are essential for cobblestone streets.
Does it rain a lot in Ha Long Bay in December?
Ha Long Bay typically sees around 3 rainy days in December. Rain is usually in the form of brief showers rather than all-day downpours, so a compact umbrella is sufficient. Mornings tend to be drier, making them ideal for outdoor sightseeing.
Can you swim in Ha Long Bay in December?
December is suitable for swimming in Ha Long Bay, though the water may feel refreshing at first. Air temperatures average 22°C, and most swimmers find it enjoyable once they're in. Midday is usually the warmest time for a dip.
How many hours of daylight are there in Ha Long Bay in December?
In December, Ha Long Bay gets approximately 10.9 hours of daylight per day. This affects how much sightseeing you can fit in—longer days mean more time for outdoor activities, while shorter days are perfect for cozy museum visits and early dinners.
Is December peak season in Ha Long Bay?
No, December is not peak season in Ha Long Bay. Expect better value on accommodation, shorter queues at attractions, and fewer tourists at popular spots. This is an excellent time to experience the city like a local and enjoy a more authentic atmosphere.

Weather Data: Based on 2020–2025 historical climate data from Open-Meteo

Solar calculations: SunCalc (timezone: Asia/Bangkok)

Last Updated: February 2026

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