Best & Worst Times to Visit Halong Bay for Views & Weather

Wondering when to cruise through Halong Bay's emerald waters and iconic limestone cliffs?

Whether you're chasing sunshine, avoiding crowds, or planning a romantic escape, here's the best (and worst) time to go—based on real traveler tips and cruise conditions.

The Best Times to Visit Halong Bay: March, April, October & November

October to November is the best time to experience Halong Bay's ideal weather: mild temperatures and nearly guaranteed sunshine. Clear skies provide the perfect backdrop for sunrises and sunsets, a favorite among photographers. Kayaking, swimming, cave exploration, and village biking are all enjoyable during this time. Planning a proposal or anniversary trip? You'll find scenic, stress-free moments without the weather worries.

March and April offer a softer version of Halong Bay, pleasantly warm and coming with blooming spring flowers. Skies, however, are often overcast. Some drizzles are expected. As many TripAdvisor reviews point out, "The sky is almost always overcast, so you see more gray water and grayish greenish mountains."

Other Good Months: January, February and December

December to February is Halong Bay's driest stretch of the year, with just 0.6–0.7" (15–18 mm) of rainfall and barely 2–3 rainy days per month. Expect cool temperatures between 15–20°C (59–68°F), and while the water's too cold for swimming (below 22°C / 71°F), kayaking, hiking, and cave visits remain comfortable.

December stands out for its crisp skies and festive vibe. On December 24th and 31st, most overnight cruises organize themed parties, and gala dinners are served on board.

January and February bring more fog and overcast skies, especially in the early morning. These conditions change the look and feel of the bay dramatically. If you're hoping for golden-hour photography, you might be disappointed. But if you're seeking a peaceful, misty backdrop and thinner crowds, winter might just be your season.

Worst Time to Visit Halong Bay: July–September

July to September marks Halong Bay's typhoon season and the most unpredictable time to cruise. Sudden storms often lead to last-minute cancelations or shortened itineraries. As many travelers shared, "Our 2-night cruise was cut to a 1-night one due to a typhoon warning." and "Kayaking was canceled due to the storm."

With highs around 31°C (87°F) and 82% humidity, hiking and biking can quickly turn exhausting as well.

Despite the weather risks, July and August are packed with families on school break. Expect crowded cruise routes and long waits at popular spots.

September sits on the edge of Halong Bay's storm season, offering a mix of risks and rewards (fewer crowds).

Is it ever worth going?

Traveling during this time is like playing a game of chance. Rain usually doesn't last long in summer (except during typhoons). If you're flexible with timing, you might catch a few golden days at off-season rates.

If July–September is your only travel window, consider a 1-day cruise or keep your itinerary flexible with backup plans in Hanoi.

When Is Halong Bay at Its Most Peaceful?

Halong Bay may feel remote, but it rarely feels quiet as one of Vietnam's most iconic attractions.

If you're looking for a quieter experience, May, June, and late September are shoulder-season gems. They fall between high seasons and storm peaks. Expect fewer tour groups and more top-tier cruises at off-season rates. Skies can be mixed, but many travelers find the quieter vibe and open views well worth the trade-off.

Want to avoid the crowds any time of year (even during peak season)?

• Skip weekends and national holidays, especially the 5-day break around April 30, when domestic travel peaks.
• Choose a 3-day cruise, which sails farther into the bay—away from the day-tripper zone.
• Book a premium cruise with fewer than 14 cabins for a more intimate, less touristy experience.

Halong Bay Weather by Month

The year-round weather of Halong Bay can be divided into four seasons: spring (March to May), summer (June to September), autumn (Late September to November), and winter(December to February).

Here's a quick look at monthly weather patterns—including temperature, rainfall, and water temperature—so you know what to expect.

Plan Your Halong Bay Adventure with Asia Highlights

Looking for the perfect Halong Bay experience? We can customize your trip with expert itineraries, exclusive cruises, and insider tips. Whether you're after serene moments or thrilling adventures, we'll craft your dream escape.

Book your tailored trip today with us!