By Evelyn Nguyen, Apr 28, 2025
August in Halong Bay is all about contrasts - bright, sunny mornings that invite you to jump into the sea, and sudden tropical downpours that come just as you’re lounging on deck. It’s not the most predictable time of year, but it’s certainly not the worst either. If you’re the type of traveler who doesn’t mind a little surprise and wants to see Halong Bay in its most tropical, dramatic mood, August might be the time for you.
So, what’s Halong Bay Weather in August really like? Can you still cruise, swim, and enjoy the bay in August? Let’s find out in this guide brought to you by Halong Bay Cruise Trip.
Halong Bay Cruise
Throughout Halong Bay weather by month, August is one of the hottest and wettest months in Halong Bay. If you enjoy warm weather and don't mind a few sudden rain showers, it can still be a great time to visit for water-based activities.
In August, you can expect daytime temperatures to range between 28°C and 34°C. It often feels hotter than it looks on paper because of the high humidity, which can reach 80-90%. Even mornings can feel warm and sticky, so light clothing and staying hydrated are a must.
At night, it cools slightly, usually around 26-28°C, but it’s still warm enough to enjoy the deck or have dinner under the stars on your cruise - if the weather allows.
Rain in Halong Bay
Halong Bay in August weather brings frequent short tropical rains, usually in the afternoon or evening. These showers can last from 15 minutes to an hour and often clear up quickly. It’s rare for it to rain the entire day, so your cruise or tour won’t necessarily be ruined.
However, Halong Bay is still in the typhoon season during August. While most storms don’t hit directly, strong winds or heavy rains from nearby systems can occasionally lead to trip delays, cancellations, or itinerary changes for safety reasons.
That’s why it’s smart to book with a cruise company that offers flexible changes, and always check the weather forecast a few days before your trip. And Halong Bay Cruise Trip is here to help you!
The sea is calm on most days, and the water temperature is around 29°C for swimming in Ha Long Bay in August, kayaking, and other water activities. Visibility is decent, though it may be affected slightly by humidity or rainclouds. You might not always get postcard-blue skies, but the limestone islands still look beautiful, especially when misty or after a light rain.
Summary of Halong Bay Weather in August:
If you’re the type of traveler who enjoys summer vibes, warm water, and doesn’t mind a bit of weather unpredictability, then this is still a great time to go to Halong Bay.
Since August is part of the rainy season, it’s considered the shoulder season. That means fewer tourists compared to the peak months (like October to April), so you can enjoy more space on your cruise, better photo spots, and quieter Halong Bay beaches. This is great for travelers who prefer a more relaxed experience.
Kayaking in Halong Bay
Thanks to the hot Halong Bay weather August, the water is warm and perfect for swimming, kayaking, or simply relaxing on a deck chair. Most cruises still run all their activities, and it feels amazing to cool off in the sea after a hot morning exploring a cave or fishing village.
The first half of August is still Vietnamese summer break, so you’ll see more local families on board, especially during weekends. It’s a great time to observe Vietnamese families traveling, playing karaoke at night on their cruises, and enjoying seafood feasts. You’ll get to feel more of the local travel culture, especially if you avoid the ultra-luxury cruises.
Floating village in Halong Bay
August usually brings better prices for cruises and hotels, especially during mid to late August when local summer holidays wind down. If you’re looking to travel on a budget but still want a quality experience, August might be one of the best times to book.
August is still in the rainy and typhoon season, so it’s smart to keep an eye on the forecast a few days before your Halong Bay cruise trip. If a storm is coming, cruises might be delayed or canceled. Booking with flexible cancellation policies or a trusted agency can help you avoid stress.
The August weather in Halong Bay is hot and humid, so you’ll want to pack breathable clothes, swimwear, and a sun hat. But it’s also a good idea to bring a light raincoat or quick-dry jacket for sudden showers, they usually don’t last long but can catch you by surprise.
Tender boat to Halong Bay main cruise
Even on cloudy days, the UV index can be high in August. Sunscreen, sunglasses, and a good hat are must-haves, especially if you plan to kayak, swim, or sunbathe on the Halong Bay cruise deck.
If possible, avoid weekends during early August when local tourism is still high. Mid-week Halong Bay cruise in August often has better prices, fewer people, and sometimes free upgrades.
Halong Bay Beach
So, can you visit Halong Bay in August? If you're someone who doesn't mind a little unpredictability and wants to experience the bay in a different light, August could surprise you in the best way. Still not sure if August is the right time for you to visit Halong Bay? Reach out for a free consultation on Halong Bay cruise trips, we’re here to help you find the perfect experience, whether it’s a relaxing overnight cruise or a short summer escape.
Thank you for submitting your booking request with us. Please kindly check your email!
Best Halong Bay Cruise Trip 2025/2026
