Halong Bay Weather – When is the best time to visit?

If you are planning your Vietnam tour, Halong Bay must be one of the most popular destinations. Therefore, to have a perfect trip, it is very important to research its weather as well as leisure activities in advance. The following article will give you the characteristics of Halong weather by month. Let’s find out!

best time to visit Halong
A trip to Vietnam cannot be complete without a visit to Halong Bay

Halong weather by month

Halong Bay Weather by Month
Halong Bay Weather by Month


Halong weather in January is quite dry. You can enjoy the clear blue sky with little sunlight. The temperature is low, about 18°C with fog and not much rainfall. Therefore, when visiting Halong Bay at this time, you should wear a thin jacket and raincoat. Don’t forget to bring your swimsuit. If the weather is warm enough, you can immerse yourself in the water of Halong.

Also, it is a good time for you to experience most of the activities on the bay such as enjoying the whole view of Halong Bay by seaplane, climbing Bai Tho, and admiring the bay on Halong bay cruises.

Especially, traveling to Halong Bay in January can avoid the crowds of the locals.

The beauty of Halong bay
You will have a chance to admire the beauty of Halong Bay on a luxury cruise


Like January, you will also experience the beauty of the clear blue sky and full of sunshine. However, the temperature will be lower, about 17°C along with the same fog as last month. Once again, don’t forget your thin jacket.

Similarly, all the activities are suitable to experience in February. However, be aware that the beginning of the month falls into the period of the Tet holiday, so some attractions might be closed. Therefore, it is necessary to get advice from your travel consultant.


March is considered the best time to visit Halong Bay, due to the slight increase in the weather of about 19°C. It is the perfect time for a climbing experience. Also, you can take a dip in the clear blue water in Halong if the weather permits.


Considered the end of the tourist peak, Halong weather in April begins hotter. You can take advantage of the beautiful sunny days in early April to enjoy your vacation. The summer rain starts around the end of the month with a temperature of about 24°C.

This time is ideal for taking part in all relaxing activities in Halong Bay such as Halong Bay kayaking, swimming, climbing, cycling, boating, or sightseeing with seaplanes. You can choose the 1-night or 2-night itinerary on Halong Bay cruises with various things to do in Halong Bay.

Ha Long weather in April
Charming Bay in the April Weather


May is a good time to travel, however, it is often difficult to determine the weather. More rainfall is accompanied by heat and humidity. The average temperature is about 29°C. In return, the cool breeze on Halong Bay will make you much more comfortable.

Therefore, please make sure to bring shorts, tank tops or T-shirts, especially swimsuits to jump into the clear blue water anytime.

June, July, and August

June has the most typical summer weather with high temperatures up to 35°C and heavy rainfall. For travelers who prefer the sun with summer showers, this will be the ideal time. Storms often occur on the bay, so outdoor activities will be postponed or canceled due to rain. Either you might not be able to take part in mountain climbing.

Halong weather in July and August is the wettest of the year. It rains the most at this time, therefore, it is not suitable for sightseeing and other activities.

However, if you are fond of the sun and lucky enough, this time could be an opportunity for you to explore on less rainy days than forecast. Therefore, don’t miss many good deals for the summer promotion. Halong Junk Cruise is where to find the most favored cruise for your experience in Halong Bay.


In September, the rainfall on Halong Bay is significantly reduced. The temperature also drops to 28°C, the weather is mild and pleasant. The rainy season ends, meaning that the attractive activities will return. You will have a chance to experience the beach as well as mountain activities. Note that you should bring a raincoat to prevent the sudden rains.


In October, the sky becomes clearer and the rainfall drops significantly. The average temperature is 26°C. It is one of the most beautiful months to travel to Halong Bay.

October is also a good time to see Halong Bay from above with seaplane, visit the colorful shimmering Halong Bay caves, and enjoy a lot of fun activities such as swimming, climbing or cycling around the islands.

October is the best month to visit Halong bay
Kayaking in Halong Bay


The weather in November is dry, the temperature is about 24°C, so this is considered an ideal time for you to visit Halong Bay. Don’t miss the chance to immerse yourself in the water of Halong Bay before winter comes. November is also the peak season, you should book in advance to avoid disappointment.


December is the driest time of the year. With rainfall and temperatures simultaneously falling, you don’t have to worry about sudden rains. The sky becomes clear, creating the greatest conditions for you to experience the activities on the bay.

With a temperature of about 19°C, during the day, the weather in Halong Bay is sunny but the night is quite cold. Therefore, you should bring both summer and winter clothes. The low temperature also creates the perfect conditions for travelers to explore the magnificent beauty of Halong Bay. Some popular activities to be considered are hiking, climbing, and cycling. The water activities might not be suitable due to the cold weather.

December is also the festive season, therefore you can expect beautiful decorations for Halong Bay Cruises and special food for Christmas and New Year.

Halong Bay in December
Beautiful Halong Bay in December

Best time to visit Halong Bay

Every time could be the best time to visit Halong Bay for the greatest Vietnam holiday destinations of all time. Each time of the year, this Wonder of the World has its own beauty.

Here are the important notes about the best time to visit Halong Bay:

  • Spring (March to May) and Autumn (September to November) are the best seasons for a Halong Bay cruise.
  • Spring (March, April, and May) and Autumn (September, October, and November) are also the best times for outdoor activities as well as sightseeing in Halong Bay and are recommended for special occasions.
  • Summer months (May to September) are the best for beach activities in Halong Bay.
  • To avoid crowds, consider visiting Halong Bay during the shoulder seasons, which are the months of April, May, September, and October.

Maybe you want to read more for the best Cruise in Halong Bay: Halong Bay Guide: Unlocking the Ultimate Cruise Experience

Suggested Vietnam tours including Halong Bay

With all the information about Halong Bay weather above, we hope you have fully planned your Halong Bay tours. Enjoy and make the most of your time in Halong Bay!

Yen Nghiem – Travel Specialist

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