When to visit Ha Long Bay: month by month
Updated 3 November 2026 · 3 min read
In short
The best months for Ha Long Bay are March-April and October-November: mild, dry weather and good visibility over the karsts. From December to February it is cool and often misty, but cruises still sail. Avoid July and August: heavy rain and typhoons that cancel cruises.
Ha Long Bay month by month
| Month | Rating | What to know |
|---|---|---|
| January | Good | Cool and often grey, frequent mist, calm sea |
| February | Good | Cool, possible drizzle; cruises full around Tet |
| March | Ideal | Mild, the mist lifts |
| April | Ideal | Mild to warm, good visibility |
| May | Fair | Hot and humid, first rains, pleasant swimming |
| June | Fair | Hot, thunderstorms; warm sea |
| July | Avoid | Heavy rain, risk of typhoons and cancellations |
| August | Avoid | Heavy rain, typhoons possible |
| September | Fair | Rains ending, but typhoons still possible |
| October | Ideal | Dry and mild, the best period |
| November | Ideal | Dry and mild, often clear skies |
| December | Good | Cool and dry, chilly water for swimming |
Depending on your plans
- Photos and clear skies: October-November, then March-April.
- Swimming and kayaking: May-June and September, when the water is warm, accepting a few storms.
- Budget and fewer people: winter outside Tet, with warm clothes for the deck in the evening.
Ready to book? See Ha Long Bay cruises, where to stay in Ha Long and a one- or two-night cruise.
Frequently asked questions
What is the best month for Ha Long Bay?
October and November, then March and April: mild, dry weather and good visibility. December to February are still good but cooler and mistier.
Can you do a Ha Long Bay cruise in summer?
Yes, but from July to September typhoons can cancel cruises. Choose a free-cancellation offer and keep a spare day.
Is Ha Long cold in winter?
It is cool, especially in the evening on deck, and mist is frequent. Cruises sail as normal; swimming is not very pleasant.