Halong Bay Weather in September: Temperature & Things to Do

September 05, 2023 - 725 views

September is the end of the summertime and the beginning of fall in Halong Bay. The Halong Bay weather in September is favorable for many leisure travelers. The below article will make everything clear to you.

  • September is one of the best months to travel for perfect weather
  • Marks the beginning of Halong Bay autumn, the most beautiful season of the year
  • Cancellation rarely happens in September, so be confident about booking a cruise
  • Low chance of bad weather with no more intense hot and cooler temperatures

Halong Bay September Weather & Temperatures

September has fewer showers before the day ends, and Halong Bay becomes clean and beautiful with sparkling golden sunshine and purple sunset. Many tourists enjoy the cool air with lower temperatures in comparison with what it was in the previous month.


Avg. 28°C

Average rainfall

190 mm

Rainy days

16 days

Humidity level


Sunshine hours

7 hours/ day


The temperature this month decreases, with an average temperature of 28°C. The highest temperature is 31°C, while the lowest is 21°C.

Sea temperatures

The average sea temperature is 27°C, making it comfortable to swim. The heat this month is not too intense like it is in the summer, and not too cold to swim.


7 hours of sunshine in one day, higher than the previous month, gives you more time to enjoy outdoor activities.

Humidity & Rainfall

The average humidity level is around 72%, while the monthly rainfall is 190 mm with 16 rainy days, much less than the previous month with an average monthly rainfall of 265 mm.

Halong Bay Weather September

Halong Bay weather overview in September


Things to Do in Halong Bay September

Try your luck with squid fishing

  • Best for: Relaxation lovers, Families with kids

After taking part in outdoor activities, you can just relax on the sundeck, watch the sunset, and enjoy the delicious seafood in Halong Bay. It’s highly recommended to try squid fishing as it is the squid season. You may catch more squid than anyone else on the cruise!

You can have a memorable and relaxing moment with your family members while fishing squids and enjoy the fresh air of the bay at night. This activity is included in most of Halong overnight cruises.

Squid fishing on the Orchid Trendy Cruise

Night squid fishing on the Orchid Trendy Cruise

Find peace of mind with Tai Chi

  • Best for: Recharge retreaters, Seniors

If you are an early morning person, do not forget to join the Taichi class in the peaceful weather of September days. This kind of exercise helps to reduce stress, keep fit, improve concentration, and help you to find peace of mind. You can keep practicing Taichi after the cruise by watching videos or reading books.

Tai Chi class on the sundeck

Tai Chi class on the sundeck

Climb to the top of Titop Island

  • Best for: Nature lovers, Active travelers

There is a variety of activities for you to do this month: Swimming in a crystal clear blue sky and calm seawater, kayaking to admire the landscape, and getting on a bamboo boat to explore the beautiful caves.

For anyone who prefers uncommon activities such as climbing to the top of a high island. Once you reach the top of the mountain, you will have an impressive panoramic view of beautiful Halong Bay.

Panorama view of Halong Bay from Titov Island

Panorama view of Halong Bay from Titov Island

By choosing cruises having Titov Island in the itinerary, you will have a chance to try climbing mountains. Some budget Halong cruises below are highly recommended for you:

Local Tips For A Perfect Trip In September

Booking tips

  • Avoid booking around the national holiday (Independence Day - 2nd September) since the crowds of local people
  • Hunt for the September Sales or End Season Deals up to 40% OFF for Halong Bay cruises at bestpricetravel.com
  • Check the weather forecast and contact the travel agent for an update about your trip in case of bad weather like occasional storms and heavy rain
  • Have a backup plan to other cities in Vietnam, tours in Hanoi, or its surroundings if the cruise is canceled

Packing tips

  • Bring summer clothes (tank tops, overalls, shorts, polo shirts, etc.) and a light cardigan or jacket
  • Do not forget to bring swimsuits for water activities
  • Sunscreen is a must even though there is not much sunshine this month
  • Bring a light raincoat, and some waterproof bags in case it rains during your trip
  • Pack mosquito repellent during the transitional weather and monsoon season


Pros & Cons of Visiting Halong In September


  • September is the end of the low season so there are still some promotions for booking cruises this time
  • Less touristy, you do not have to wait for time to do the kayaking or be served on the cruise
  • Perfect time for people who love outdoor activities since this month is the changing season with good weather conditions


  • Possibility of rain in September, but it does not rain too much and frequently
  • The tour might be canceled because of bad weather but very rare

September, in general, is good for traveling to Halong Bay in terms of money and weather. It is considered one of the best months during the year to travel to Halong Bay at a reasonable price and in good weather conditions. Booking a cruise with us to get the best deal.

Grab Deals Up To 40% OFF At BestPrice Travel

Jenny Tran

(Image source: Internet)

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