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Ha Long Bay weather: What month should you travel to Ha Long and what is the most beautiful season?

The weather in Ha Long Bay is clearly divided into 4 seasons: spring, summer, autumn and winter, making it easy for visitors to choose the right time to start their vacation. Let's explore the features of Ha Long weather month by month to prepare carefully for your trip!


Ha Long Bay in January is very dry, with almost no rain and cold. Temperatures average 17°C and early morning fog is possible. Tourists to Ha Long Bay in January are mainly foreign tourists.

Month High/Low (°C) Average rainfall (mm) Rainy day
January 20° / 14° 15 mm 4

This time is suitable for sightseeing activities, seaplane rides or mountain climbing to admire the bay under the gentle sunlight. Water activities are often overlooked. You should also prepare thick clothes to keep your body warm, hiking shoes and necessary winter gear.

Photo: @193trungkinh - Admire the beauty of Ha Long Bay from above


Ha Long Bay weather in February is similar to January but the temperature is slightly higher, about 18°C. The highest temperature of the day is 21°C and the lowest is 15°C. Rainfall in the month starts to increase to 22mm/month but the air is still dry and fog often appears in the morning.

Month High/Low (°C) Average rainfall (mm) Rainy day
February 21° / 15° 12 mm 4

Photo: @ktbtravels - lots of outdoor activities, explore in Ha Long Bay

Traveling to Ha Long Bay at this time needs to bring warm clothes, shoes and you should participate in activities such as sightseeing, climbing. February coincides with the Vietnamese Lunar New Year, so some tourist attractions may be closed.

Photo: @chiaoniu - Explore the caves in Ha Long Bay


March is the time of transition between cold winter to warm spring and the beginning of the peak tourist season on Ha Long Bay. The weather is sunny and clear, with an average temperature of 19°C. Rainfall increased to about 48mm and the humidity in the air also increased.

Month High/Low (°C) Average rainfall (mm) Rainy day
March     23° / 18° 38mm

Tourists to Ha Long Bay this month are still mainly foreign tourists. Not-to-miss activities are mountain climbing and swimming (weather permitting). You should bring lighter clothing, swimwear, and eyeglasses.

Photo:@uabisa - Swimming in favorable weather


The weather in April continues to be favorable for tourism and outdoor activities. The temperature increased much compared to March, averaging about 24°C. Clear skies, lots of sunshine, you'll feel a bit of heat by midday when temperatures hit 27°C. The number of rainy days and rainfall is also higher, you may experience some sudden rain. However, water sports activities, swimming, climbing or seaplane rides are still great.

Month High/Low (°C) Average rainfall (mm) Rainy day
April 27° / 21° 48 mm 7

Photo: @theavaragetraveler - Kayaking through the cave

Traveling to Ha Long in April, you should note the April 30 holiday when many people start the holiday and come here to have fun.


May attracts more domestic tourists because this is the time when students are on vacation and start family outings. Even so, May is also the beginning of hot, sweltering summers and lots of unpredictable rain. The average temperature is 28°C. The rainfall increased by 175mm, leading to an increase in the humidity in the air.

Month High/Low (°C) Average rainfall (mm) Rainy day
May 30° / 24° 156 mm 8

Summer in Ha Long Bay is very suitable for water activities, especially swimming. You should prepare cool clothes, sunscreen, hats, glasses, swimwear and especially raincoats to prevent heavy rains. The beginning of May is still in the holiday season 30/4-1/5, so Ha Long Bay can be very crowded, you should avoid this time.

Photo: @alick_sumoonthong - Kayaking against Ha Long Bay


Summer has really arrived on Ha Long Bay in June with all the characteristics such as high temperature, hot (about 30°C), heavy rainfall (179mm), humid air. Luckily the rains won't last all day and you can still enjoy your normal outdoor activities.

Month High/Low (°C) Average rainfall (mm) Rainy day
June 32° / 26° 179 mm 10

Photo: @mikeeexplorer - Cruise Doris explore the bay

Having fun on Ha Long Bay in the summer will require tourists to be in good health, used to hot, humid tropical weather. The number of tourists this season also begins to decrease and if it rains heavily your trip may be delayed to ensure safe conditions.


The peak of summer heat appears in July. You will feel the heat from early morning, sweltering from noon to afternoon. Heavy rainfall (210mm) also makes the air more humid and uncomfortable. Some storms start to appear, making conditions less than ideal for sailing. Therefore, July is the low season for Ha Long tourism.

Month High/Low (°C) Average rainfall (mm) Rainy day
July 32° / 26° 201 mm 15

Photo: @vietnamtravelers 

Arriving in Ha Long at this time, you need to pay attention to the weather forecast, prepare a full set of raincoats, umbrellas, hats, sunscreen and insect repellent. Medicines for the common cold are also important to prevent weather changes. The plus point for this month is that the hot air will make you excited for swimming, snorkeling…


August continues to maintain hot weather with the highest temperature of 32 and the lowest of 25 degrees Celsius. Heavy rain (262mm) and frequent storms make August still the low season for Ha Long tourism.

Month High/Low (°C) Average rainfall (mm) Rainy day
August 32° / 25° 262 mm 16

August is the ideal time for fun activities in the cool water, snorkeling to see underwater marine life.

Photo: @halong.cruisecabin - Swimming is an experience not to be missed when coming to Ha Long Bay

However, this is one of the months most prone to tour cancellations due to the effects of storms. Traveling to Ha Long in August, you need to prepare a raincoat, summer clothes, sunglasses, hat, umbrella, swimwear and sunscreen.


September marks the end of the hot, humid, rainy summer. Instead, the average temperature started to drop to 28 degrees Celsius. The air is cooler and more temperate, the rain is also thinning and tourism activities have begun to be bustling again. Pleasant weather suitable for outdoor activities that do not take a lot of strength. Rain can still appear during the day so don't forget to bring umbrellas, raincoats.

Month High/Low (°C) Average rainfall (mm) Rainy day
September     31° / 24° 190 mm 14

Note that September 2 is a National Day holiday, so Ha Long Bay can be very crowded. You should try to schedule and book services early on this day.

Photo: @gabi.agabi 


Photo: @naturewander 

Ha Long weather in October is very beautiful, romantic autumn seems to have covered the bay. The sky becomes clear, the temperature drops below 26 degrees Celsius so you can wear cool clothes. The air is no longer sweltering, the rain is also less making outdoor activities go smoothly. Thanks to favorable weather conditions, October onwards is the peak tourist season in Ha Long Bay.

Month High/Low (°C) Average rainfall (mm) Rainy day
October 31° / 24° 50-58 mm 10-12

Photo: @adnetslowtravel - Discover life in fishing villages


In November, the temperature drops to 20 degrees, which will make you feel cold, ideal for watching the bay with a warm coat. The weather is dry and very little rain, the humidity is also lower. Traveling to Ha Long this season you need to bring sweaters, coats, hats and gloves to avoid cold air. Enjoy time swimming at the beaches before winter comes and it's too cold to do this.

Month High/Low (°C) Average rainfall (mm) Rainy day
November 26° / 19° 12-17 mm 7-12

Photo: @chii_annie 


December, the last month of the year, is the perfect time to travel. The sky is clear blue without rain, the temperature is about 18 degrees Celsius. During the day with warm clothes will still be very warm but it will be colder at night.

Month High/Low (°C) Average rainfall (mm) Rainy day
December 22° / 15° 10-15 4-8

Photo: @llollyllilly 

Traveling to Ha Long in December becomes even more bustling with Christmas and New Year holidays, bringing unforgettable moments of joy for you and your loved ones.

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