Bai Tu Long Bay
Bay Scenic karst bay east of Halong, quieter cruises
Sea area northeast of Ha Long, Bai Tu Long Bay features karst islands, fewer cruise boats and accessible caves; visitors take overnight cruises, kayak among limestone stacks and visit fishing villages like Vung Vieng.
Bai Tu Long Bay is a coastal bay in northeastern Vietnam adjacent to and northeast of Ha Long Bay, noted for its karst limestone islands and sheltered waters. It is less developed and usually less crowded than Ha Long Bay, making it a common choice for quieter boat trips and overnight cruises.
Tour itineraries typically emphasize sea-cave visits, small fishing villages, and striking island silhouettes rising from the water, with many routes originating from the Quang Ninh coast. The bay forms part of the same coastal karst landscape that characterizes Ha Long Bay and is accessed by road or ferry from the provincial ports.
- Cruising tips: Cruises that include overnight stays or multi-day trips are popular since they allow exploration of quieter karst islands and sea caves that are less crowded than nearby Ha Long Bay.
- Best time to visit: The bay lies within the Gulf of Tonkin and is best visited outside the monsoon season for calmer waters and clearer views of limestone karsts.
How to Get to Bai Tu Long Bay #
Bai Tu Long Bay is accessed by boat from the northeastern coast of Vietnam - most cruises and tour boats depart from Hạ Long City / Hon Gai or Tuan Chau marinas and travel northeast into Bai Tu Long. By road, Ha Long (Hon Gai/Tuan Chau) is the gateway from Hanoi: expect roughly 160-180 km by road from Hanoi to Ha Long, about 3-4 hours depending on traffic (major routes include National Highway QL18). Once in Ha Long you board a boat/cruise - there’s no direct road access into the bay itself.
Tips for Visiting Bai Tu Long Bay #
- Choose a Bai Tu Long-specific overnight cruise that embarks from Van Don/Cai Rong to avoid the busiest Halong corridors and enjoy calmer waters and dawn light over the bay.
- Book a smaller-capacity boat if you want quieter anchorages and access to less-visited lagoons and fishing villages that large day-boat fleets typically miss.
- Avoid weekends and Vietnamese public holidays when day-trip traffic from Hanoi spikes; weekday departures will have noticeably fewer boats on the water.
Best Time to Visit Bai Tu Long Bay #
Best visited in spring or autumn (March-May, September-November) for mild weather and good sea conditions.
Weather & Climate near Bai Tu Long Bay #
Bai Tu Long Bay's climate is classified as Humid Subtropical (Dry Winter) - Humid Subtropical (Dry Winter) climate with hot summers (peaking in July) and mild winters (coldest in January). Temperatures range from 14°C to 30°C. Heavy rainfall (2111 mm/year), wettest in July with a pronounced dry season.
January
January is the coolest month with highs of 18°C and lows of 14°C. Light rainfall and mostly overcast skies.
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February
February is cool with highs of 18°C and lows of 15°C. Moderate rainfall (42 mm) and mostly overcast skies.
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March
March is mild with highs of 21°C and lows of 17°C. Moderate rainfall (48 mm) and mostly overcast skies.
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April
April is mild with highs of 24°C and lows of 20°C. Regular rainfall (83 mm) and mostly overcast skies.
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May
May is warm with stifling humidity (dew point 24°C). Heavy rain (204 mm) and mostly overcast skies.
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June
June is hot, feeling like 32°C with oppressive humidity. Heavy rain (287 mm) and mostly overcast skies.
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July
July is the hottest month, feeling like 33°C with oppressive humidity. The wettest month with heavy rain (482 mm) and mostly overcast skies.
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August
August is hot, feeling like 31°C with oppressive humidity. Heavy rain (392 mm) and mostly overcast skies.
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September
September is hot, feeling like 30°C with oppressive humidity. Heavy rain (352 mm) and mostly overcast skies.
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October
October is warm with highs of 27°C and lows of 22°C. Significant rainfall (108 mm) and partly cloudy skies.
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November
November is mild with highs of 24°C and lows of 18°C. Moderate rainfall (59 mm) and partly cloudy skies.
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December
December is cool with highs of 20°C and lows of 15°C. The driest month with just 26 mm and partly cloudy skies.
