Halong Bay weather in June

Last updated on
March 29, 2024

June in Northern Vietnam finds itself in a curious situation between the start of summer and the start of the rainy season. This usually means a mixture of everything: hot, sunny, humid, and rainy, resulting in a rather diverse climate.

A lot of international tourists tend to dismiss Vietnam as a summer destination because of the heat and rain at this time. While these are more intense than they are at other times of the year, they are still manageable. Moreover, the advantage of reduced tourist influx allows for a splendid opportunity to explore the renowned attraction of Halong Bay.

Let’s delve into what you can anticipate in terms of weather when visiting Halong Bay in June.

In short:

  • June is among the hottest months of the year with a high humidity level
  • June  is an off-peak season, making it less crowded and ideal for travelers
  • Compared to other months in summer, June is off-season, but still, a good time to visit Halong Bay
  • Check the weather forecast & have a backup plan in case of cruise cancellation due to bad weather

Is June a good time to travel to Halong Bay?

While June in Halong Bay is known for its hot and humid weather, which leads many people to avoid traveling during this month, there are still some who find it interesting and enjoyable. Although it may not be considered the optimal time to visit, June can still be a good option for a summer trip, particularly for those who enjoy water activities.


In June, the weather in Halong Bay reaches its peak for the year, with average temperatures soaring as high as 29°C. While this may discourage visitors from colder countries who are not used to the intense heat, it typically does not pose a problem for visitors from countries such as Australia, South Africa, and Brazil, who appreciate escaping the early onset of winter chill in their home countries and embracing the prevailing conditions in Vietnam.

Furthermore, the daytime duration in June increases to 8 hours per day, which exceeds the duration in other months.

Rainfall & Humidity

Humidity levels in June are relatively high, lingering between 75-87%. The summer months tend to be stickier and wetter than other months of the year, which is generally why fewer people travel to Halong Bay in the summer.

The rainfall that comes with the Halong Bay weather in June is higher than the levels we usually expect to see in May, with 172mm and about 15 rainy days expected. While this does represent an increase, it’s still lower than the average rainfall in July and August, which has been known to fall well over 250mm.

The Halong Bay weather in June is sporadically prone to storms that blow in from the southwest. It’s always a good idea to check the weather forecast, and double-check with your cruise operator if there’s bad weather on the way.

Sea temperature

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

Summary of Halong Bay weather in June

TemperatureAverage: 29°C
Low: 25°C
High: 36°C
Sunshine hours/day8 hours
Average precipitation172mm
Number of rainy days15
Humidity level87%
Sea temperature28°C

Pros and Cons of traveling to Halong Bay in June


  • June is the low season for visiting Halong Bay with low travel costs and fewer tourists, so take advantage of them.
  • Service on the cruise during the low season is really good because you do not have to wait to be served
  • The price of other services is generally good too – the hotel price is down, and the airline offers a lot of promotions, transfers, or tours that are cheap.


  • Traveling to Halong Bay this time, you may be uncomfortable with the heat, especially if you are not used to the tropical climate.
  • Sometimes, Halong Bay experiences bad weather like thunderstorms, and your cruise can be canceled or delayed.

Tips for traveling to Halong Bay in June

Booking tips:

  • Halong Bay is attractive even in the rain. Just book a Halong Bay cruise and enjoy staying in one of the seven natural wonders in the world.
  • Follow the weather forecast frequently before your trip to prepare suitable items.
  • Contact your sales consultant for a backup plan if cruise cancellation happens.
  • If you are not lucky enough and have bad weather conditions when traveling to Halong Bay, there are still a lot of things to do on the cruise.

Packing tips:

  • Bring light and breathable clothes such as t-shirts, tank tops, or Hawaii shirts as June is hot and humid
  • Do not forget to bring a hat, sunglasses, suncream, or a swimsuit for swimming
  • Remember to bring a light raincoat in case it can be rainy in June

To combat the heat of Halong Bay’s weather in June, there are several strategies you can employ. One option is to embark on cave excursions, which offer natural air-conditioning and complete protection from the sun.

In June, water sports also become extremely popular, and many people find comfort in swimming in the cooler waters. Opting for rowing boat rides instead of more physically demanding activities like kayaking can be an optimal choice among visitors.

If the heat becomes too much to handle, taking time to relax on the sundeck or in your air-conditioned cabin can be incredibly appealing.

It’s important to remember that this is your vacation, and you have the freedom to choose which activities suit you best. Don’t feel obligated to participate in everything on the itinerary.