Halong Bay Weather in July

Last updated on
March 29, 2024

Everybody is looking for a perfect trip for their summer vacation. While planning, the first thing that comes up in your mind must be the weather. You don’t want all the efforts that you put into the trip being ruined by bad weather.

Traveling to Halong Bay in July offers a unique experience with its challenges and rewards. In this article, let’s learn more about Halong Bay weather in July as well as tips to ensure that your cruise is unforgettable.

In short:

  • Halong Bay weather in July is hot and humid as it’s the typical weather of summer in Vietnam
  • July is ideal for different outdoor and aquatic activities
  • Sunscreen, sunglasses, and hats are a must

Is July a good time to travel to Halong Bay?

Vietnam is a big country with a coastline of 3,260 km long so the weather varies from the North to the South. Halong Bay is located in a temperate zone with four distinct seasons. Halong’s weather overall is quite stable compared to other places in the Northern region.

From May to October, the North is hot and rainy. Fortunately, July is not the month with the highest chance of rain. Halong Bay remains sunny throughout the month with light rain or scattered showers. You will be pleased with the cool weather after the rain.

July is a good time to enjoy Halong Bay since there is nothing more wonderful than exploring the bay with sunshine and cool water.


The temperature varies from 29°C – 34°C; the average temperature is 29°C, the same as the previous month. Due to global warming, Halong’s temperature has sometimes reached 40°C and beyond.

Since July falls during the summer, the daytime hours are longer than in June, averaging 8 hours.

Rainfall and Humidity

The average humidity is around 75%. The weather will be hot and humid most of the day, you might be sweating constantly, but it shouldn’t stop you from having fun. It’s convenient to sunbathe and get the luminous tan you’ve always wanted!

The average rainfall grows up to 201 mm with 15 rainy days. Halong Bay frequently experiences rain this month, the rain can cool the heat and you will feel better.

Sea temperature

It is usually sunny in the summer, so the water should be perfect for swimming. The seawater temperatures range from 27°C to 33°C. The water temperature is comfortable to swim in.

Some of the best beaches for you to enjoy in Halong Bay such as Ho Ba Ham and Ba Trai Dao beach. Ba Trai Dao beach has three small mountains with an alluring beach and romantic landscape, however, the beach is swimmable for only 2-3 hours due to the rising tide.

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Summary of Halong Bay weather in July

TemperatureAverage: 29°C
Lowest: 29°C
Highest: 34°C
Sunshine hours/day8 hours
Average precipitation201mm
Number of rainy days15
Humidity level75%
Sea temperature27°C

Pros and Cons of traveling to Halong Bay in July


  • Since July is not the peak season of Halong Bay travel, visitors are likely to book a Halong Bay cruise at a better price than in previous months. 
  • Visitors can avoid the crowd and enjoy a quieter Halong Bay
  • July is suitable for aquatic activities. The water will help you cool down
  • The sunny days in July will give you the best photos with its warm and bright colors, so don’t forget to bring your cameras


  • The weather in summer can be too hot to bear for some people due to the intense heat, so consider carefully before booking a trip
  • Storms and typhoons may interfere with your plans. Despite being uncommon, the trip might nevertheless be canceled in the event that.

Tips for traveling to Halong Bay in July

Booking tips:

  • Make sure to check the weather forecast before deciding to go to Halong Bay due to bad weather such as typhoons or heavy rains
  • Your cruise operator will inform you in case the cruise gets canceled because of a storm
  • Have a backup plan. If your cruise trip cannot happen, you can pick other places to explore first before going back to Halong Bay once the weather settles

Packing tips:

  • Bring light and loose-fitting clothing for maximum comfort 
  • Do not forget your hats and sunglasses to protect your head and eyes from the intense sunlight and extreme heat
  • Sunscreen is a must during the summer months

If you encounter rain during your trip, simply just enjoy the cruise itself. Don’t let the rain ruin your stay because, after all, you can still enjoy other activities to make up for the rain and be prepared for outdoor excursions later.

Here are a few suggestions to do when it’s raining:

  • Enjoy spa onboard
  • Join the fruit carving demonstration
  • Learn how to make Vietnamese dishes
  • Hang out, savor cocktails, and make new friends at the bar

Now you know more about Halong Bay weather in July, relax and enjoy your vacation!


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