Month guide · Ha Long Bay · Vietnam
Ha Long Bay in July
What July is really like in Ha Long Bay: weather, crowds, prices, events and what to pack.
Updated By the AMZBooking editorial team
Photo: AnhTuan Le, Public domain
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Quick answer
July is a quieter month with trade-offs. Expect average highs of 32°C (90°F), lows of 26°C (79°F), about 17 rainy days and roughly 13.3 hours of daylight. The hottest and busiest month with domestic families; warm sea but frequent storms and occasional cruise cancellations.
Key facts
- Average high / low
- 32°C (90°F) / 26°C (79°F)
- Rainy days
- About 17
- Daylight
- About 13.3 hours
- Sea temperature
- 30°C (86°F)
- Crowds
- Very busy
- Hotel prices
- Highest
Weather in July
July is the warmest month in Ha Long Bay: days average 32°C (90°F) against a yearly average high of 26°C (79°F), and nights fall to about 26°C (79°F). Rain falls on roughly 17 of its 31 days. Compared with June (31°C (88°F)), July is about as warm; by August highs stay near 31°C (88°F).
- Sunrise (15 July)
- About 05:19
- Sunset (15 July)
- About 18:36
- Daylight
- About 13.3 hours
- Sea
- 30°C (86°F)
Summer (June–August). Hot, humid and the warmest water for swimming, but the wettest and busiest season, with typhoons that can stop all boats.
Crowds and prices
On a 1–5 scale, July rates 5 for crowds (the peak is July at 5) and 5 for hotel prices (highest in July). Book accommodation early: July is one of the pricier months.
Events in July
July has no major recurring festival in Ha Long Bay, which usually means easier bookings.
What to do in July
With frequent rain, plan around indoor sights and keep outdoor time flexible.
Nature · Bo Hon Island
Sung Sot Cave
Go with an early or late cruise departure; around midday the walkway inside becomes a slow-moving queue.
- Time needed
- 1 hour
- Cost
- Low cost
- Iconic
- Rainy day
- Kids
- Nature
Nature · Dau Go Island
Thien Cung Cave
The Heavenly Palace cave on Dau Go Island has a single large chamber of stalactites and flowstone lit in bright colours.
- Time needed
- 45 minutes
- Cost
- Low cost
- Rainy day
- Kids
- Nature
Historic site · Cat Ba Island
Hospital Cave
Combine it with the national park on the same morning; a local guide at the entrance explains how the rooms were used.
- Time needed
- 45 minutes
- Cost
- Low cost
- History
- Rainy day
- Kids
Museum · Hon Gai
Quang Ninh Museum
A striking black-glass building on the Hon Gai waterfront that covers the bay's geology and marine life, the province's coal-mining history and the cultures of its ethnic communities.
- Time needed
- 1.5 hours
- Cost
- Low cost
- Rainy day
- History
- Kids
- Architecture
The sea averages 30°C (86°F) — warm enough to swim. Best beaches near Ha Long Bay.
What to pack
For highs near 32°C, lows near 26°C and 17 wet days: light, breathable clothes, a sun hat and high-factor sunscreen; a compact umbrella and waterproof shoes — rain is frequent; comfortable walking shoes.
Is July a good time to visit Ha Long Bay?
A quieter month with trade-offs. If your dates are flexible, April–May and October–November are better overall. Compare every month.
Ha Long Bay in other months
Questions travellers ask
+Is July a good time to visit Ha Long Bay?
It is a quieter month with trade-offs. The hottest and busiest month with domestic families; warm sea but frequent storms and occasional cruise cancellations.
+How warm is Ha Long Bay in July?
Average highs are around 32°C (90°F) and lows around 26°C (79°F).
+Does it rain a lot in Ha Long Bay in July?
Expect rain on about 17 days of the month, so pack for wet weather.