When is the best time to go to Halong Bay?

The best time to visit Halong Bay depends on several factors, from the climate to the desired activities. To enjoy favorable weather, the ideal period to discover this Vietnamese gem is between the months of October, November, and December. These months offer a balanced mix of comfortable temperatures and lower humidity, making the climate particularly pleasant for outdoor activities.

If you are wondering when to go to Halong Bay for a comfortable swim, the months from April to December offer water temperatures ranging between 20°C (68°F) and 32°C (90°F) , ideal for a refreshing dive in its emerald waters.

However, it is also crucial to consider the tourist seasons. The peak tourist season in Halong Bay occurs during the months of April, August, October, November, and December, as well as during the Chinese New Year (or Tet holiday, the Vietnamese New Year). During these months, you can expect a higher influx of tourists, which can be both an advantage and a disadvantage. On one hand, it creates a vibrant and lively atmosphere, but on the other hand, it can mean more crowded sites, more difficulty in finding a last-minute cruise, and higher prices.

Outside of these periods, Halong Bay can offer a more tranquil and personal experience. Although the weather may be less predictable, the natural spectacle of the bay, with its karst formations, mysterious caves, and diverse fauna, remains impressive throughout the year.

In conclusion, the decision of when to visit Halong Bay really depends on your personal preferences. Whether you are looking to maximize good weather, dive into its warm waters, or avoid crowds, Halong Bay has something to offer every visitor, at any time of the year.

So, when is the best time to go to Halong Bay? Here's some more information to help you in your decision:

  • The best months for good weather in Halong Bay are October, November and December
  • On average, the warmest months are May, June, July, August and September
  • The rainiest months are June, July and August
  • The best months for swimming are May, June, July, August, September and October

Annual weather in Halong Bay

Infographic of the best times to visit Halong Bay
Infographic of the best times to visit Halong Bay ©whereandwhen.net

Weather details in Halong Bay month by month

To get all the information about the climate and weather in Halong Bay for a specific month, click on the corresponding link below:

January February March April May June July August September October November December

Weather and climate in Halong Bay

Halong Bay, located in Vietnam, is known for its stunning natural beauty. However, if you are planning to visit, it is important to understand the climate before packing your bags. Halong Bay has a humid subtropical climate, characterized by a dry winter and a hot summer, according to the Köppen-Geiger classification. The climate in the region can vary significantly from one season to another, making it an interesting travel destination throughout the year.

Winter in Halong Bay (January - March)

Winter in Halong Bay is generally mild, with temperatures ranging from 15°C (59°F) to 24°C (76°F) . However, it is important to note that the climate can be unfavorable during this period, with an average cloud cover of 61% to 67%. Precipitation is also more frequent in winter, with an average of 67mm to 75mm of rain per month.

Spring in Halong Bay (April - June)

Spring is a transitional period in Halong Bay, with temperatures starting to rise. Daytime temperatures can reach up to 32°C (90°F) in June. However, the weather can be unfavorable with frequent rain showers and high humidity.

Summer in Halong Bay (July - September)

Summer in Halong Bay is generally hot and humid, with temperatures reaching up to 32°C (90°F) . The climate during these months can be very unfavorable due to heavy rainfall and high humidity.

Autumn in Halong Bay (October - December)

Autumn marks the return of more favorable weather conditions in Halong Bay. Temperatures start to drop, usually ranging between 16°C (61°F) and 28°C (83°F) . Autumn is also a time of year when cloud cover and humidity decrease, making the climate more pleasant for visitors. It is the best weather period!

In conclusion, Halong Bay offers a varied climate throughout the year, with changing conditions from one season to another. It is therefore recommended to plan your trip according to the climate to make the most of your stay. Remember that the climate can be unfavorable during winter and summer, but becomes more pleasant during autumn.

Halong Bay : La baie d’Halong

Charts: temperature and rainfall in Halong Bay

In the charts below, you can see the following seasonal norms for the city of Halong Bay: the minimum and maximum outdoor temperature, the risk and amount of monthly rainfall, daily average sunshine, sea temperature, and relative humidity for each month of the year.

Outside temperature

Precipitation (rainfall)

Daily sunshine hours

Sea temperature


Peak visitor numbers and tourist seasons in Halong Bay

Find out when Halong Bay has its high tourist season (the period when the influx of tourists is highest) and off-peak tourist season using our data and figures.

Tourist seasons in Halong Bay

  • Very low season in Halong Bay
    The months with the lowest number of tourists are: March.
  • Low season in Halong Bay
    The months with low numbers of tourists are: January, February, April, May, June and September.
  • High season in Halong Bay
    The number of visitors to Halong Bay is high in: July, August and December.
  • Peak season in Halong Bay
    The largest number of tourists visiting Halong Bay is during: October and November.

Figure: Visitor index for Halong Bay month by month

Best time for low prices in Halong Bay

Average prices of hotels in Halong Bay month by month

Generally, March is the month with the lowest hotel prices in Halong Bay. So this is a great time to save on your holiday! In contrast, September is statistically the most expensive month of the year for hotels.

Find the best price for your hotel room

Average price of hiring a car in Halong Bay

On average, it costs $ 78 per day to hire a car in Halong Bay. This price varies by $ 39 depending on the month. In september, hiring a car costs an average of $ 70 per 24 hours, so this is the best time to save money! In contrast, the average price in february is $ 108.

Find the best price for your car rental

Other cities and places near Halong Bay

Best time to go to Vietnam

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