When to go to Ha Long Bay?

Limestone towers rise straight out of the green water of Ha Long Bay, and the usual way to see them is from the deck of an overnight junk. Hang Sung Sot opens into chambers of stalactites lit like a stage set, the floating village of Vung Vieng still works the water, and Cat Ba adds forest trails and quiet beaches at the southern edge.
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The best time to go
For the best weather in Ha Long Bay, aim for April, October to November.
See also: Where to go in April? · Where to go in October? · Where to go in November?
Month-by-month weather in Ha Long Bay
| Month | ☀️ h/day | 🌧️ mm | 🌡️ °C | Score /100 |
|---|---|---|---|---|
| January | 5.5 | 55 | 17 | 56 |
| February | 3.7 | 59 | 17 | 49 |
| March | 5.6 | 36 | 21 | 60 |
| April | 7.8 | 77 | 24 | 67 |
| May | 8.6 | 198 | 26 | 60 |
| June | 8.0 | 308 | 29 | 47 |
| July | 10.0 | 290 | 29 | 57 |
| August | 8.5 | 363 | 28 | 46 |
| September | 8.0 | 451 | 27 | 37 |
| October | 9.2 | 67 | 25 | 74 |
| November | 9.3 | 33 | 23 | 76 |
| December | 6.7 | 11 | 18 | 65 |
Estimated from 3 years of data. The score (0–100) combines sunshine, dry weather, clear skies and temperature.
The climate in brief
In Ha Long Bay, the sunniest month is July, and the driest is December (about 11 mm). Temperatures peak in July (about 29°C). Over the year, an average of 1,947 mm of rain falls, and 3 months in 12 offer ideal weather for a trip.
What to do in Ha Long Bay?
- Ha Long Bay cruise
- Surprise Cave (Hang Sung Sot)
- Cat Ba Island
- Vung Vieng floating village
Practical info
- Country: Vietnam
- Airport: Hanoï Nội Bài (HAN)
Destinations near Ha Long Bay
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