Season guide · Ha Long Bay · Vietnam
Ha Long Bay in autumn
September–November: weather, crowds, prices and the best things to do this time of year.
Updated By the AMZBooking editorial team
Photo: AnhTuan Le, Public domain
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Quick answer
Storms fade through September, leaving dry, clear and warm weather in October and November, the best time for views. Expect highs up to 30°C (86°F) and lows around 19°C (66°F), with about 26 rainy days across September–November. October–November are among the best months of the year to visit.
Key facts
- Months
- September–November
- Temperatures
- 19°C (66°F) to 30°C (86°F)
- Rainy days in the season
- About 26
- Sea
- 24°C (75°F) to 28°C (82°F)
- Crowds
- Moderate
- Hotel prices
- Average
Weather in autumn
| Month | High | Low | Rainy days | Daylight | Crowds |
|---|---|---|---|---|---|
| September | 30°C (86°F) | 25°C (77°F) | 13 | 12.2 h | 3/5 |
| October | 28°C (82°F) | 22°C (72°F) | 8 | 11.6 h | 4/5 |
| November | 25°C (77°F) | 19°C (66°F) | 5 | 11.1 h | 3/5 |
Compared with the rest of the year: average highs of 28°C (82°F) against a yearly 26°C (79°F), and 26 of the year's roughly 130 rainy days fall in these 3 months. Crowds rate 3/5 and hotel prices 3/5 on average.
What's on in autumn
Recurring events; dates move from year to year, so confirm with the organiser.
- September: National Day holiday — busy domestic travel (2 September)
Good choices for autumn
Nature · Bo Hon Island
Sung Sot Cave
Sung Sot, or Surprise Cave, is one of the largest caves in the bay, reached by steps up the side of Bo Hon Island.
- Time needed
- 1 hour
- Cost
- Low cost
- Iconic
- Rainy day
- Kids
- Nature
Nature · Dau Go Island
Thien Cung Cave
If your cruise visits Sung Sot, you do not need both; pick whichever is on the quieter route that day.
- Time needed
- 45 minutes
- Cost
- Low cost
- Rainy day
- Kids
- Nature
Historic site · Cat Ba Island
Hospital Cave
A natural cave reinforced with concrete during the American War to house a secret hospital and shelter, with operating rooms, wards and a small cinema spread over three levels.
- Time needed
- 45 minutes
- Cost
- Low cost
- History
- Rainy day
- Kids
Museum · Hon Gai
Quang Ninh Museum
The marine floor with skeletons and models is the part children enjoy most.
- Time needed
- 1.5 hours
- Cost
- Low cost
- Rainy day
- History
- Kids
- Architecture
Day trips in autumn
- Quan Lan Island (About 1.5–2 hours by car and fast boat) — A long, low island in Bai Tu Long Bay with wide sandy beaches such as Minh Chau, an old communal house and fishing villages.
- Co To Island (About 2.5–3 hours by car and fast boat) — One of the furthest inhabited islands off Quang Ninh, with clear water, cliffs, a lighthouse and sandy beaches.
What to pack
- Light, breathable clothes, a sun hat and high-factor sunscreen
- A compact umbrella and waterproof shoes — rain is frequent
- Comfortable walking shoes
Other times of year
Questions travellers ask
+Is autumn a good time to visit Ha Long Bay?
Yes: October–November are among the best months. Storms fade through September, leaving dry, clear and warm weather in October and November, the best time for views.
+What is the weather like in Ha Long Bay in autumn?
Highs of up to 30°C (86°F) and lows around 19°C (66°F), with about 26 rainy days over the season.