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Ha Long Bay

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Travel Info
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Travel Info

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Ha Long Bay Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Ha Long Bay year round climate

  • Spring (March–May): Average 21.2–26.6°C, mild and comfortable climate with gradually increasing rainfall. Common activities: Exploring Ha Long Bay, boat trips, cave visits. Recommended clothing: Light jacket, long-sleeved shirt, comfortable trousers or skirt.
  • Summer (June–August): Average 28.9–29.0°C, hot and humid with abundant rainfall. Common activities: Swimming, water sports, relaxing by the sea. Recommended clothing: Light and breathable clothing, short sleeves, shorts, sun protection clothing, swimwear.
  • Autumn (September–November): Average 27.4–23.8°C, comfortable and pleasant climate, with the most rainfall in September, gradually decreasing thereafter. Common activities: Exploring Ha Long Bay, photography, outdoor activities. Recommended clothing: Long-sleeved shirt, light jacket, comfortable trousers or skirt.
  • Winter (December–February): Average 18.1–17.4°C, mild and cool with little rainfall. Common activities: Exploring Ha Long Bay, sightseeing, enjoying the peaceful atmosphere. Recommended clothing: Light jacket, long-sleeved shirt, comfortable trousers or skirt.

Ha Long Bay climatological average

Annual average temperature: approx. 24°C / Annual rainfall: approx. 1920 mm / Summer humidity: 75%–85% / Rainiest month: September

Ha Long Bay monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
17.4°C
49.7
February
17.6°C
57
March
21.2°C
32.3
April
24.4°C
55
May
26.6°C
167
June
28.9°C
295.7
July
29°C
286.3
August
28.4°C
393.7
September
27.4°C
460.3
October
25.6°C
99.7
November
23.8°C
17.3
December
18.1°C
6.7

Ha Long Bay weather for the next seven days

8/26
Wednesday
Overcast
31.2°C/25.4°C
8/27
Thursday
Light rain shower
30°C/25.1°C
8/28
Friday
Light rain shower
32.4°C/25.5°C
8/29
Saturday
Light rain shower
32°C/25.9°C
8/30
Sunday
Light rain shower
30.6°C/24.4°C
8/31
Monday
Patchy rain nearby
29.6°C/24.3°C
9/1
Tuesday
Light rain shower
29°C/22.8°C

Ha Long Bay Frequently Asked Questions and Useful Information for Travel

What is the best way to explore Ha Long Bay?

For a balance of immersion and exploration, a 2-day, 1-night cruise is often recommended. Many cruises venture into neighboring Lan Ha or Bai Tu Long Bay to avoid crowds. Expect activities such as visiting caves like Sung Sot Cave, kayaking, swimming at secluded beaches, and enjoying sunset views. Look for cruises that include excursions to nearby bays for a more serene experience.

What is the best month to visit Ha Long Bay?

The best time for a Ha Long Bay tour is in spring and autumn, specifically in March, April, September, and October. During these months, the weather is often delightful with mild temperatures, clear skies, and high activity levels.

How do I travel to Ha Long Bay?

You can fly to Van Don Airport (Quang Ninh) which is near Ha Long Bay. Alternatively, many travelers fly into Hanoi and then take a shuttle bus directly to Ha Long Bay, which is a common and convenient option.

Is Ha Long Bay worth the trip?

Absolutely. Ha Long Bay is an incredible natural wonder and a classic Vietnam experience. An overnight cruise is highly recommended to fully appreciate its beauty and unique karst landscape. It's an unforgettable destination that adds significant value to any Vietnam itinerary.

What are the must-do activities in Ha Long Bay?

Key activities in Ha Long Bay include cruising through the limestone karsts, exploring magnificent caves such as Sung Sot Cave, kayaking or sampan rowing in the emerald waters, swimming at pristine beaches, and enjoying breathtaking sunset views over the bay. Many cruises also offer cooking classes and Tai Chi sessions.