When to visit Halong Bay? Don’t worry – choosing the wrong time can mean bad weather, crowded boats, or foggy views. No one wants to miss the beauty of Halong Bay just because of the timing. In this guide, we’ll help you find the best time to visit for clear skies, calm waters, and the best views. Keep reading to make sure your trip is as perfect as it should be!
When to Visit Halong Bay? Best Time to Visit This Halong Bay

If you’re planning a trip to Halong Bay, the sweet spot to go is during the shoulder seasons – think March to April and September to November. During these months, the weather is delightful, with just the right temperatures and low humidity, perfect for checking out all the sights and enjoying the great outdoors!Â
But hey, don’t stress if those months don’t work for you; any time of year can be a blast, and each season brings its own fun experiences. So, pack your bags and get ready for an adventure, no matter when you visit!
Ha Long Bay Weather: Your Ultimate Seasonal & Month Weather Guide
Planning a trip to Ha Long Bay? This easy seasonal weather guide will help you find the best time to visit, whether you love sunshine, cool air, or fewer crowds.
Spring Awakens in Halong Bay: A Fresh Start in March – April

- Pros: Pleasant temperatures, low humidity, and clear skies make it ideal for outdoor activities.
- Cons: Can be a bit crowded due to the start of the tourist season.Â
March: A Gentle Start to Spring
March is when spring starts to show its face in Ha Long Bay. The weather is mild, and the air feels fresh and cool — perfect for outdoor trips and cruising. The skies are often clear, and everything looks calm and peaceful. You might get a bit of light rain here and there, but it usually doesn’t last long and won’t ruin your plans.
This is also a quiet month when it comes to tourists, especially local ones, so it’s a great time to enjoy the bay without the crowds.
👉 What to expect: Cool, fresh air, mostly clear skies, light rain, and a peaceful atmosphere.
April: Spring in Full Bloom
April brings more sunshine and slightly warmer weather to Ha Long Bay. The skies are usually blue and bright, and the bay looks stunning under the sunlight. There may still be a few rainy days, but they’re usually soft and pass quickly.
April continues to be a calm time for travel — fewer crowds, smooth cruises, and a perfect setting if you love nature and quiet moments. There aren’t many big events or festivals, which means more time to enjoy the views and relax.
👉 What to expect: Pleasant weather, more sunshine, quiet spaces, and beautiful natural scenes.
Summer Fun in Halong Bay: Tropical Showers and Typhoon Tips (May – September)

- Pros: Good for water sports and activities.Â
- Cons: Can be hot and humid, with a risk of typhoons and potential cruise cancellations.Â
May: The Beginning of Summer
May is when you start to feel summer arriving in northern Vietnam. The days get warmer, and you’ll notice stronger sunlight. It’s still not too hot, so it’s a nice balance between spring coolness and summer heat.
Rain can show up on some days, but it’s often light and doesn’t last long. May is also the beginning of the low season in Ha Long Bay, so cruise deals are easier to find. Just try to avoid visiting around April 30 and May 1, as those are public holidays and can bring big crowds.
👉 What to expect: Warmer days, early summer sun, possible cruise discounts, and a few light rains.
June: Start of Summer – Hot and Busy
June marks the beginning of full summer in Ha Long Bay. The weather is usually sunny and bright, which is great for sightseeing and cruising. But be prepared — the heat starts to rise, especially during midday. You might also get some short rain showers, though they usually pass quickly.
This is also when local families start their summer holidays, so the bay can get crowded. Tourist spots, especially beaches and cruises, become busier than usual.
👉 What to expect: Warm sunshine, possible light rain, growing crowds, and rising heat.
July: Peak Heat and Humidity
July is when the summer heat kicks into full gear. It’s hot, humid, and the sun can be very strong. You’ll also notice more rain and higher chances of tropical storms (typhoons), which can affect your travel plans if you’re not prepared.
Because it’s still school holiday season in Vietnam, domestic travel is at its peak. Ha Long Bay is likely to be packed, especially on weekends.
👉 What to expect: High heat, high humidity, sudden rain, and lots of local tourists.
Autumn in Halong Bay: Enjoy the Peak Season from October – December

- Pros: Pleasant temperatures, low humidity, and clear skies make it ideal for outdoor activities.
- Cons: Can be a bit crowded due to the start of the tourist season.Â
August: The Hottest and Wettest Month
August is often the hottest and wettest month of the year in Ha Long Bay. Expect heavy rains on some days, high humidity, and possible typhoons. If you choose to visit in August, keep an eye on weather updates and be flexible with your plans.
Tourist crowds are still common, especially at the beginning of the month, but things slowly quiet down toward the end.
👉 What to expect: Very hot days, more rain, possible storms, and crowds at the start of the month.
September: Calm, Clear, and Perfect
September is like a breath of fresh air after the busy summer. The weather is much more comfortable — not too hot, with gentle breezes and clear skies. Rain is less common, and the chances of typhoons go down too.
Best of all, domestic tourist season is over, so the bay becomes peaceful again.Â
👉 What to expect: Mild temperatures, calm weather, fewer crowds, and perfect for cruising.
Winter Magic in Halong Bay: Discover the Charm of January – February

- Pros: Misty and foggy conditions can create a magical atmosphere.Â
- Cons: Can be cooler, and some water activities may be limited.Â
January: Cold and Quiet
January in Ha Long Bay is cold and often foggy. The views can be misty, but the peaceful atmosphere is perfect for a calm, crowd-free trip.
👉 What to expect: Cold, foggy, quiet, fewer tourists.
February: Cool Weather and Festive Vibes
February is still cool with some fog, but there are also sunny days. It’s Tet season — Vietnam’s biggest holiday — full of colors, joy, and local celebrations.
👉 What to expect: Cool, light fog, lively Tet festival, cultural experiences
Best Time to Visit Halong Bay for Affordable Cruise Deals
If you’re looking for great deals, the best time to visit Halong Bay is from May to September. During this time, you can find cruises at 10 – 20% off compared to the busy months (October to April). However, the weather can be tricky, with rain and sometimes typhoons. To save more, check last-minute offers on cruise websites and keep an eye on weather updates before your trip.
Peak Season vs Off Season at Halong Bay

Ha Long Bay is beautiful all year round, but some months are busier than others. The peak season is from October to April, with the highest number of visitors in December and January during the Christmas and New Year holidays. The weather is cool and pleasant, making it perfect for sightseeing.Â
On the other hand, the off season is from May to September. It’s warmer, with more sunshine – great for swimming and kayaking. There are fewer tourists, so the beaches are quieter, and many cruises offer good deals. If you enjoy peace and lower prices, this might be the best time for you!
Travel Tips to Visit Ha Long Bay Weather
Clothing:
- Pack light, breathable clothes in summer.
- Bring a light jacket or sweater for cool evenings during spring and autumn.
- In winter (December to February), pack warm clothes as temperatures can drop.
Transportation:
By Car/Bus: From Hanoi, it takes about 2.5 to 4 hours to reach Ha Long Bay by car or bus.
- By Train: A scenic option, but it takes longer (around 12 hours).
- By Seaplane: A luxurious and faster way to reach the bay, offering breathtaking views.
Weather Alerts:
- Check the weather forecast before traveling, especially during stormy months (summer and early autumn).
- Always have an alternative plan if you’re visiting during the rainy season.
Water Activities:
- Kayaking and cruising are best enjoyed in calm weather, so plan accordingly.
Conclusion
In conclusion, when to visit Halong Bay? The best time to visit Halong Bay is from October to April. During these months, the weather is cool and dry, making it nice to explore. You can enjoy beautiful views and take part in many activities like boat tours. It can be busy in the summer, as many people visit, so try to go in the cooler months for a better experience. Halong Bay is a lovely place, and visiting at the right time makes it even more special!