Ha Long Bay  is a UNESCO World Heritage Site and popular travel destination in Quảng Ninh Province, Vietnam. The bay  is known for its stunning seascape of thousands of towering limestone karsts and islets rising dramatically from the sea. This is one of the most iconic and breathtaking natural wonders in the world.

With the purpose of helping visitors find information about weather in Ha Long Bay. In this article, we will take a closer look at the beauty and highlight some attractions in Halong Bay for you to consult and plan with your friends and family.

Halong by Helicopter
Weather in Ha Long Bay – the best time to visit

Plan With Precision – Your Ultimate Weather Handbook For Ha Long Bay Exploration!

1. Ha Long Bay’s Location

Ha Long Bay is a small bay on the west coast of the Gulf of Tonkin in the Northeast sea area of Vietnam, including the island area of Ha Long city in Quang Ninh province.

Ha Long Bay has an area of about 1,553 km² including 1,969 large and small islands, most of which are limestone islands, the core area of the bay has an area of 335 km² with  775 islands with extremely biodiversity and variety vegetation, animals and creatures ecosystems.

halong bay day trip
Best time to visit Ha Long Bay

2. Weather in Ha Long Bay by Season

2.1 Summer Delights

Summer in Ha Long Bay starts from May to August. In particular, June marks the beginning of summer; Therefore, the temperature is not too high, so traveling during this time is the most ideal.

In June, the highest temperature of Halong Bay is 24 degrees and the lowest is 30 degrees. The temperature difference between day and night is not significant, only 2 to 3 degrees. Sunrise time is still between 5:09 and 5:13. Sunset time is usually from 6:20 to 6:40.

In general, July – August often rains that mean the weather of the bay often holds you down for this time. So checking the weather forecast 10 days before your trip is always a wise move.

Discover marvelous caves
Discover marvelous caves

2.2 Autumn Tranquility

Ha Long’s autumn weather is quite moderate and comfortable with average temperature from 20-25 degrees. Ha Long autumn is the ideal time to enjoy stunning landscapes and wonderful travel experiences. Fall season is also the time when the rain decreases, so visitors can freely explore and enjoy the beauty of Ha Long comfortably.

Kayaking in halong bay
Kayaking in halong bay

2.3 Chilly Winters

From November to January, tourists will have an opportunity to experience the true Winter in a tropical country like Vietnam. Weather in Ha Long Bay will be severe, with winter temperatures dropping considerably to around even less than 10 degrees  but never below 0 degrees. Ha Long at that time usually have light rain and drizzle which contribute to the foggy and cloudy vibes in the bay. Ha Long Bay will look like a mysterious  and peaceful picture filled with looming limestone island and diverse rock formations.

2.4 Refreshing Spring

Spring lasts from late February to April, this is a good opportunity for you to have wonderful experiences in Ha Long. Spring weather in Ha Long Bay is quite beautiful with fresh, dry air, not too hot and cold. The mild and favorable climate helps visitors have more opportunities to participate in outdoor activities with comfortable humidity and temperature.

when to visit halong bay
when to visit halong bay

3. Must-try Activities by month

Ha Long Bay is recognized as the Natural Wonder of the world by UNESCO, becoming one of the worth-visiting landscapes in Vietnam for tourists. Although the dry season is generally the best time to visit,  each season has its unique beauty so the bay can be visited year-round. Let’s take a look at weather in Ha Long Bay by month, some events, festivals and other interesting activities in each month. ha long bay weather by month

MonthWeather PatternsEvents & Festivals
JanuaryMild weather, cool temperatures ( 20°C )
  • Try traditional Vietnamese food during the Lunar New Year holiday.
  • Taking a cruise tour to explore the bay’s stunning limestone karsts
  • Sightseeing by seaplane
FebruaryCool and dry with temperatures around 20°C
  • Participating in Yen Tu festival, Cua Ong festival, or Lunar New Year.
  • Trekking and cycling in Halong Bay
MarchGradually warming ( 22°C)
  • Kayak through the bay’s emerald waters visit Ti-Top Island for panoramic views
  • Hiking and exploring caves on the islands
AprilHot and wet (28°C ), sometime rain
  • Participating in carnival Halong. Enjoy water sports: kayaking, swimming. Cycling
MayHot and humid, scattered rain
  • Take a cooking class. Exploring Cat Ba island
JuneHot and humid, occasional heavy rain
  • Exploring limestone caves by bamboo boat. Joining a morning meditation class. Relaxing on a white sand beach.
JulyThe wettest months, heavy rains (32°C)
  • Enjoy fresh seafood and Vietnamese cuisine on board. Visit the Yen Duc village
  • Discovering wet caves by kayaking.
AugustWet and hot ( 32°C )
  • Swimming, practicing Tai Chi, sunbathing
  • Explore the Cửa Vạn fishing village
SeptemberLower humidity and fewer rain showers (30°C )
  • Go squid fishing at night. Trekking on Cat Ba Island. Enjoy water sports like paddleboarding.
  • Visit the Vung Vieng fishing village
OctoberPleasant weather ( 28°C)
  • Swimming and kayaking. Explore the Thien Cung Cave. Hike in Cat Ba National Park
NovemberCool and dry (24°C)
  • Tasting Vietnamese lotus tea/ coffee. Visit the floating fishing villages
  • Explore the Ho Dong Tien cave. Enjoy a seafood
DecemberCool and dry (20°C)
  • Take part in Christmas & New Year’s Eve
  • Cycling on Cat Ba Island. Visit the Dau Go Cave. Enjoy the festive holiday season
Weather in Ha Long Bay – list of Event & Places to visit by month
Cycling in halong bay
Cycling in Halong Bay

4. Best time to visit Ha Long Bay

Depending on each individual’s needs to choose the best time to visit Ha Long bay. For example, if you like outdoor activities, you should come to Halong Bay in the period from September to October or from February to April. You can admire the beautiful beaches filled with several primitive limestone caves and islands with conditional weather. 

During these months, the weather is quite comfortable with lower humidity and less rainfall that is suitable for outdoor activities, exploration, and cruising on the bay. In addition, The comfortable weather in the dry season is ideal for outdoor activities such as kayaking, hiking, swimming, exploring the bay’s caves and islands, and enjoying sea foods as well as local cuisine.

best things to do in halong bay
best time to visit ha long bay

5. Exploring Ha Long Bay

5.1 Cruise Adventures

You can travel by cruise to explore islands and caves such as Sung Sot Cave (Surprise Cave), Thien Cung Cave, and Dau Go Cave. You also have the opportunity to explore the unique limestone karsts, which are often topped with lush greenery.Many cruises offer activities like kayaking, swimming, and hiking on some of the islands.

things to do in ha long bay
Cruise in Ha Long Bay

5.2 Kayaking

Kayaking in Ha Long Bay is a popular and exhilarating way to closely explore the bay’s natural beauty. Once you’re on the water, you’re free to explore the towering limestone karsts, through caves, and into hidden lagoons at your own pace. Kayaking allows you to access places that larger boats can’t reach, explore secluded beaches, hidden caves, and quiet corners of the bay.

ha long bay activities
Kayaking in Halong Bay

5.3 Hiking

Hiking in Ha Long Bay provides a unique opportunity to explore the natural beauty of the bay’s islands and enjoy over-views from high advantage points, take in the breathtaking scenery, including lush forests, unique rock formations, and the clear waters of Ha Long Bay. Particularly, Cat Ba island is one popular hiking destination where you can find hiking trails of various difficult levels.

Trekking in Cat Ba National Park
Hiking in Cat Ba National Park

5.4 Culinary Delights

When traveling, you definitely cannot miss local cuisine. Halong bay is also very famous for fresh seafood. You can enjoy a variety of dishes such as shrimp, crab, squid, fish, and clams. Furthermore, you should look for local restaurants and seafood markets where you can choose your seafood, and they’ll prepare it for you in a style of your choice.

Cha Muc (Squid Cake) is a specialty food of Halong Bay. By mixing squid paste with various seasonings and then grilling or frying it. It’s often served as an dessert with sauces.

Nem Cua Be (Crab Spring Rolls) are a popular Vietnamese dish filled with a mixture of crabmeat, vegetables, and rice vermicelli, wrapped in rice paper. They are often served with a dipping sauce and can be found in many local restaurants.

Visiting  local markets is most-activities in the towns surrounding Halong Bay, such as Ha Long City and Bai Chay, to try a variety of street food and local delicacies like Banh Mi , fresh fruit and sweets.

Fried ѕpring roll
Cuisine in Ha Long Bay

5.5 Cultural Experiences

The Ha Long Bay area has many important and long-standing historical and cultural relics that visitors can explore and learn about in ancient fishing villages on the Bay with unique and traditional cultural features. 

Some cruises and tours in Ha Long Bay provide cultural performances on board. These can include traditional music, dance, and folk stories that showcase Vietnam’s cultural heritage. This is a great way to relax and learn about the Vietnamese traditional arts while enjoying the bay’s scenery.

There are also some traditional festivals or events which are celebrated with enthusiasm and provide a unique cultural experience with colorful decorations, parades, and traditional performances. Cultural experiences in Ha Long Bay offer visitors a deeper understanding of the area’s heritage and the lives of local people.

Imagine admiring the vibrant sunset through the cruise window or having romantic fine dining with your loved one on the deck. So why wait? Choose your favorite Ha Long Cruise Tour to live in the fantastic atmosphere of one of the most beautiful bays in the world.

cruise in halong bay
cruise in halong bay

6. is halong bay worth it?

Yes, Ha Long Bay deserves to be a place where everyone should come to travel and experience. It is considered one of the most breathtaking natural wonders in the world, and it has been designated as a UNESCO World Heritage Site for its stunning limestone karsts, emerald waters, and unique landscape. 

Beyond the natural beauty, Ha Long Bay offers a range of activities such as exploring caves, visiting fishing villages, kayaking, swimming, and hiking on some of the islands. These activities can provide a well-rounded travel experience.

Cruise experience allows you to relax, take in the scenery, and enjoy onboard amenities. And it also offers opportunities to engage with Vietnamese culture, such as visiting fishing villages and attending cultural performances. If you’re interested in learning about local life and traditions, it can be a rewarding experience

halong cooking class
weather in ha long bay

In conclusion, Ha Long Bay is undoubtedly a remarkable and visually stunning destination. Let’s go to explore Ha Long Bay with our local guide by VM Travel


1. Is summer in Ha Long hot?

Yes, Halong Bay in the summer season is hot and humid with temperatures averaging around 32°C, and the possibility of occasional heavy rain.

2. What should we do in Halong Bay?

Take a Cruise to explore Hạ Long Bay. Visit the Caves such as Sung Sot Cave (Surprise Cave), Thien Cung Cave, and Dau Go Cave. Kayaking and Swimming in the bay’s clean and clear waters. Some cruises offer opportunities for swimming, or you can relax on the sandy beaches of islands like Titov Island. Visit Fishing Villages such as Vung Vieng and Cua Van and indulge in the delicious and fresh seafood. Engage in watersports like paddleboarding, windsurfing, and snorkeling.

3. What months should we travel to Halong Bay ?

The best time to travel to Ha Long Bay in Vietnam is typically during the dry season, which lasts from October to April.