Best Time To Visit Halong Bay: Weather & Seasons Guide 2026

Introduction

When is the best time to visit Halong Bay? This question has popped up in the heads of many tourists who are planning to visit Halong Bay, Vietnam. Although the answer might vary according to travel preferences and purposes, learning about Halong Bay weather and the best time to visit Halong Bay is a must before traveling. It helps tourists better plan their vacations.

In this article, Halong Private Car provides a detailed guidebook about Halong Bay’s weather, climate, seasons, and timing. We hope it can serve as a helpful reference for your upcoming visit to Halong Bay, Vietnam. Learn more as follows.

Best Time To Visit Halong Bay

Halong Bay is located in the western part of the Tonkin Gulf, which belongs to Vietnam’s East Sea. It encompasses a vast sea area and almost 2000 karst islands, which create a unique landscape that numerous tourists want to admire.

Such geography gives Halong Bay a tropical climate with two separate seasons: a wet, hot summer and a dry, cold winter. The annual average temperature ranges from 15°C to 25°C (59°F to 77°F). Also, the average humidity is around 84%.

So, which is the best time to visit Halong Bay? September–November and March–May are considered the best time to visit Halong Bay, Vietnam. However, it cannot be easily defined like that. Different tourists have different ideas of the most favorable time for their trip, depending on personal tastes, holiday schedules, budgets, etc. Some ideas to consider:

✅ If your budget is limited, you should visit Halong Bay sometime from May to September. It’s the tourism off-season in Halong due to the unfavorable weather. So, tourist offerings, such as hotels, restaurants, or cruise ships, will see big sale-offs. You can take advantage of this chance to make a Halong vacation at a good price.

✅ If you love beach activities, April, May, and June are the best. The weather is calm and sunny, perfect for swimming, kayaking, and cruising.

✅ If you don’t like crowds, Halong in December, January, and February will suit you. It’s winter in Halong—cold and tranquil, without cramped tourist scenes. Although you cannot swim, you can enjoy BBQs, chill out in beach-view hotels, or visit impressive caves.

All in all, the weather is an important factor in your holiday. But don’t let it ruin your experience. In such a stunning land of Halong, we believe you can find delights at any time of the year.

Halong Bay In Peak Season VS. Off Season

The tourism peak season in Halong Bay, when tourist visits are higher than usual, lasts longer than the off-season. Indeed, the period from September to May (9 months) is regarded as Halong Bay’s peak season. It means that this UNESCO World Heritage Site is popular among tourists all year round.

The fact that the weather is lovely during this time is one of the reasons why it’s a peak season. Also, it coincides with the long holiday of Christmas and New Year. Therefore, despite the possible crowding, many tourists plan their vacations in Halong during this peak period.

How about the off-season in Halong Bay? It falls in June, July, and August. The weather is unstable during this time. Tropical rain, storms, and hurricanes usually occur, which interrupt many activities. Unfortunately, the main tourist activities, including cruises and swimming, in Halong Bay are in the sea. So, it might be uncomfortable and even dangerous for tourists to visit Halong Bay.

However, Halong Bay’s off-season has its advantages. Sunny days, service discounts, and uncrowded beaches appear inviting to many tourists. So, if you’re lucky, you can manage to have an amazing holiday in Halong even in its off-season.

Halong Bay Weather By Month: Details & Tips

Are you still not sure about what the best time to visit Halong Bay is? It’s understandable. Let’s help you out. We provide detailed information about Halong weather patterns each month of the year so that you can have a better insight. Also, travel advice and tips for each time are attached for those who need more instruction for their vacation plans.

QUICK REVIEW

Halong Bay In January

The New Year in northern Vietnam is usually winter: cold and wet. January in Halong Bay is similar. It may be chilling, with the average temperature around 19°C (13°C as the lowest). It’s possible to get dim sunlight and sporadic gales. The humidity level is up to 70 percent.

In general, Halong Bay weather in January is pleasant. Although warm clothes may be necessary, tourists won’t have to deal with the irritating heat or sweaty summer.

✅ What you can do in Halong Bay during January:

• Taking a Halong Bay cruise for sightseeing
• Go kayaking
• Discovering caves

❌ We do not recommend swimming and diving due to the cold weather.

Halong Bay In February

It’s less cold when Halong comes in February. The temperature gets warmer, 15°C at the lowest and 30°C at the highest. The humidity also increases to 70%. The later, the more sunny it becomes. Tourists who don’t want freezing but cool air can wait until February. It would be more comfortable.

More interestingly, Tet holiday, the biggest festive event in Vietnam, usually takes place in late January and early February. Tourists who visit Halong during this month can enjoy the dynamic atmosphere of festivals. Therefore, you can admire Halong Bay landscapes in a special theme.

However, due to the Tet holiday, service prices will be much higher. Worse, some services will be suspended, resulting in unavoidable inconveniences for tourists.

Halong Bay In March

Halong Bay enters its best season in March. The temperature gets warmer, between 18–34°C, but not yet too hot. Vacationers can experience the refreshing air of spring. Also, activities such as cruising and kayaking are more favorable thanks to the sunnier days.

However, you should expect the random monsoon rain, which hasn’t totally disappeared around this time. You will see the fairly high humidity of 75% and rainfall frequency of 255 mm.

Besides popular activities in Halong, what unique event can you experience in Halong during March? We recommend visiting Yen Tu—a famous Buddhist center in Halong. Yen Tu Festival will be celebrated from March to May. Tourists can conquer Yen Tu Peak, visit Dong Pagoda, and learn about the local religious practices.

Halong Bay In April

April is evaluated as the best month to visit Halong Bay. The average temperature is around 27°C. It gives off genuine spring vibes in Halong. No frozen air or intense heat, April in Halong Bay is somewhere between winter and summer.

Warm, breezy, and sunny days facilitate almost everything holidaymakers want to do in this gorgeous destination. It’s especially perfect for cruises. With such a lovely climate, April sees the beginning of peak tourism season in Halong.

Moreover, two of the public holidays in Vietnam usually take place in April: the Hung Kings’ Festival and Reunification Day. Pairing with the nice weather, Halong will witness a large number of tourists, leading to an increase in service prices.

Halong Bay In May

The moderate spring ambiance is almost gone during May in Halong. Visitors should anticipate a sharp rise in temperature and unpredictable rainfall. In particular, the temperature ranges from 29 to 40°C. Furthermore, the weather becomes more unsteady due to tropical depressions.

What travelers should notice when visiting Halong in May:

• Check the local weather forecast frequently
• Update the cruise programs, as there are many promotions during this time (You may receive up to 40% discounts or only a 2/3 price rate compared to peak seasons)
• Join swimming and beach activities instead of mountain climbing, as it can get very hot

Halong Bay In June

Halong in June completely enters its summer time with the average temperature of 35°C. Visitors will experience hot days, sea wind blowing hard, and constant heavy rains. The harsh heat and disagreeable rain create an uneasy feeling for many.

However, during this time, Halong welcomes a large surge in domestic tourist visits. Summer is the perfect time for the locals to travel around the country, including Halong Bay. Many native families consider Halong a weekend getaway. So, if you want to escape from the crowds in June, you can travel during weekdays.

Halong Bay In July

Scorching heat gets more intense when Halong reaches July every year. It’s hot at night and day, with temperatures ranging from 28 to 40°C. Besides, its precipitation can reach up to 1200 mm. Humidity is also high, at 77%.

Moreover, storms, typhoons, or cyclones may go along with such extreme weather. Halong usually experiences natural disasters in June and July. In that case, cruise delays and cancellations are inevitable for safety reasons. It definitely causes lots of trouble for holidaymakers. Therefore, July might be the worst time to visit Halong Bay.

However, cruise promotions may be ongoing until July. Also, it’s not necessarily stormy all July, but only for a few days. So, if you’re lucky, you might get a good-value-for-money trip in Halong without severe weather.

Halong Bay In August

August marks the autumn in Halong with cooler air instead of the sultry heat of the last months. The temperature level is around 26–37°C, relatively lower than July. Tourists can enjoy a mild atmosphere with soft breezes when joining various activities in Halong.

Additionally, you might get many rainy days (around 20 days per month) due to the high rainfall of around 1000 mm and humidity of about 75%. Yet, these drizzles won’t seriously affect Halong Bay cruises. They only contribute to cooling the temperature. So, don’t worry about the rain.

If you decide to join a cruise in August, don’t forget to admire Halong Bay’s famous landscapes: Tuan Chau Island, Three Peaches Beach, Vung Vieng Floating Fishing Village, and Luon Cave.

Halong Bay In September

Autumn really arrives in Halong when September comes. It brings the land more delightful winds and cool days. Halong Bay enters its best time to visit from September to November. Without continuous sweltering heat or humid rains, tourists can enjoy their visits to Halong under soft sunshine. Besides, you should expect slight rains.

We recommend you take part in water sports, such as kayaking, scuba diving, swimming, or boat rowing. Moreover, night squid fishing is an interesting activity during September in Halong.

Halong Bay In October

October in Halong Bay welcomes a refreshing ambiance, pleasurable wind blows, and mellow sunshine. October is the best time to visit Halong Bay with such an agreeable atmosphere. All kinds of tourist activities, especially Halong Bay voyages, are favorable during this time.

Throughout the month, the temperature remains at around 28°C with little rain (only 600 mm). And it will get colder when approaching the end of the month. But before winter comes, Halong in October offers a sweet time for tourists.

If you join a Halong Bay cruise in October, the weather is clear and comfortable enough to admire popular attractions like Luon Cave, Sung Sot Cave, Co To Island, Tuan Chau Island, and more. Plus, scuba diving, kayaking, and swimming are good to join during this time.

Halong Bay In November

Tourists should anticipate a seasonal change during November in Halong Bay. The temperature drops 2–3°C. Also, the monsoon may lead to more chilly winds and lower precipitation during November. Plus, sunny days remain until the end of the month.

Tourists to Halong in November should pack a couple of winter garments, such as scarves or cardigans. Moreover, you can still go swimming, do kayaking, and do scuba diving during this period.

Halong Bay In December

Although it’s winter, December the peak tourism season in Halong as it’s the festive time. The weather becomes cold and dry, with random drizzles. The average temperature is around 24°C, but there will be colder days. Overall, it’s not too harsh for tourist activities. You can enjoy a cheerful Christmas and New Year vacation with such a pleasurable ambiance in Halong Bay.

Some suggestions to enjoy December in Halong Bay:

• You should bring winter clothing items, just in case it gets too cold.
• Daytime won’t last as long as nighttime, normally only 10 hours, from around 7 AM to 5 PM. Please note this to plan your trip better.
• You can experience special gala parties on almost every cruise ship to celebrate Christmas (December 24) and New Year (December 31).

FAQs About Time To Visit Halong Bay

Which month is best for Halong Bay?

October is considered the best month to travel to Halong Bay. It gives off autumn vibes with little rain, much sunshine, cool air, and a clear sky. It’s suitable for all activities in Halong, including cruising, kayaking, cave exploring, scuba diving, etc. However, it also depends on your travel preferences.

When is the worst time to visit Halong Bay?

July and August might be considered the worst months to visit Halong Bay. Natural disasters, such as storms and hurricanes, periodically happen during these times. This leads to delays or cancellations of almost all cruises and tours in Halong.

Are there any tips for those who visit Halong Bay in July or August? We advise you to carefully track the weather forecast. Also, you can turn to other nearby destinations in northern Vietnam, such as Ninh Binh, Hanoi, or Hai Phong, before coming back to Halong after the storms.

Tourists may need Halong Private Car services to travel to other destinations, such as:

• Private Car Halong Bay To Ninh Binh – 80 USD/sedan
• Private Car Halong Bay To Hai Phong – 30 USD/sedan
• Halong Bay To Hanoi Luxury Car – 115 USD/car
• Halong Bay To Cat Ba Island Luxury Car – 94 USD/car

How many days do you need in Halong Bay?

2 to 3 days. We suggest spending two days cruising around the best islands and caves in the bay and another day for attractions in Halong City, such as Sun World Halong, Halong Night Market, Bai Tho Mountain, etc.

Is Halong Bay worth it in the rain?

Yes. The Halong Bay rainy season is from July to September, with the precipitation level around 700–1000 mm. Apart from rainy and stormy days, tourists can enjoy sunny weather as it’s still summer. The sky is clearer after the rain, so you can see the landscapes more clearly. Also, it’s not the peak season. So, it’s very convenient for those who want quiet vacation time. There are also many cruise promotions during the rainy season in Halong.

What is the coldest month in Halong Bay?

January is the coldest month in Halong Bay. The temperature ranges from 13–26°C.

Is February a good time to visit Halong Bay?

Yes. February in Halong is suitable for those who want to relax in the early-spring atmosphere and enjoy the festive Tet holiday in Vietnam. However, Tet holiday may result in higher service prices. Also, if you want warmer weather, March or April will bring you a better time.

Conclusion

In short, the best time to visit Halong Bay depends on your preferences and what activities you enjoy.

For pleasant weather, September to November and March to May are great choices. If you’re on a budget, consider visiting from May to September, when prices are lower due to off-season discounts. April to June is perfect for beach lovers, with warm and sunny weather for swimming and kayaking. If you prefer a quieter experience, December to February offers fewer crowds, though the weather is cooler and you may not be able to swim.

Regardless of when you choose to visit, Halong Bay has something to offer all year round, making it a wonderful destination for everyone. Plan according to your interests, and you’re sure to have an unforgettable time in this stunning location.

Halong Private Car hopes that our travel blog has provided you with useful information. Thanks for reading.