Halong Bay in December is quiet and often wrapped in light mist. The cool weather, festive cruises, and peaceful landscapes make it a special time to explore caves, enjoy seafood, and escape the tourist rush.
Where is Halong Bay?
Halong Bay is located in Quang Ninh Province, northeast Vietnam, about a three-hour drive from Hanoi. The bay consists of almost two thousand limestone islands and islets, most of which emerge steeply out of the water like huge sculptures. Halong Bay is a recognized World Heritage Site by UNESCO that is not just a natural wonder, but also a habitat where a fishing community still inhabits floating villages over the islands.
December is a season that attracts a lot of travellers to Halong Bay, but this is unlike the case in the summer months. But the calm settles in the bay, the landscape becomes soft, in early morning mist appears to be rather a remote retreat than an active destination. In case you want to experience slower, fewer crowds, and have the seasonal appeal, December is the right time to visit.
What Is The Weather Like In Halong Bay in October?
December offers a palpable change in Halong Bay’s vibe. Gone is the heat and humidity of summer, giving way to cooler temperatures and a slower and steadier pace. It is not freezing, per se, but you will notice the difference, especially on the cruise’s early morning starts or when the wind picks up on deck in the evening.
More importantly, December is one of the driest months in Halong Bay. The Halong Bay weather in December can still be overcast or misty in the mornings, but in general, the weather is stable enough for your outdoor plans to go ahead as planned. However, a mixture of cooler temperatures and calm seas creates a quiet pace and moody location that many travelers find unexpectedly beautiful in Vietnam.
| Weather Aspect | Details |
| Temperature | Halong Bay temperature in December ranges from 20–22 °C during the day and drops to 14–16 °C at night, especially on the water. |
| Humidity | Generally stays between 65–75%, making the air feel fresh rather than muggy |
| Rainfall | December sees only 20–40 mm of rain, spread across a few days, mostly light and short-lived |
| Cloud Cover | Skies are often grey or hazy, with occasional patches of sunlight in the afternoon |
| Weather Pattern | Winds are calm, and the weather is stable throughout the month — no storms, no extremes |
What To See And Do In Halong Bay In December
It might not have as many tourists in Halong Bay in December, but that’s exactly when the things to do in Halong Bay feel more personal and relaxed. There will also be space to walk around, less noise, and greater opportunities to appreciate the bay as it is.
Celebrate New Year’s Eve On An Overnight Cruise
December is among the most unique periods to go on an overnight cruise in Halong Bay. A lot of cruises have a program on the 31st of December which offers buffet dinner, acoustic music, and a countdown to midnight on the sundeck. You can usher in the new year not in the noisy urban streets but in the peaceful waters, lofty limestone islands, and the cool winter breeze. The rates vary between 3.8-6.2M VND per head when purchasing a 2-day 1-night package with meals and entertainment inclusive.
Bird Watching Migratory Birds In Lan Ha Bay
In the Gulf of Tonkin, the migration season of birds peaks during December. Egrets, herons, and other water birds can be found in groups resting on still shores and limestone cliffs, around Lan Ha Bay. The most appropriate way to see them is to participate in the kayaking tour or small boat trips to the calm estuaries such as Ba Ham Lake and Vung Vieng. Bird watching is such a wonderful experience that each person understands how nature concentrates itself in one place.
Kayaking Through Luon Cave Or The Ba Hang Area
December is one of the most opportune months to go kayaking in Halong Bay, with the wind being light and the waters quiet. Famous destinations of the water park, such as Luon Cave or Ba Hang, are particularly calm, and the surface of the sea is mirror-like. Cave kayaking is a good option to paddle off the low limestone arches and along hidden lagoons, even in the winter. Kayak renting can be included in the cruise or will approximately cost 120000-250000 VND per hour in the case of rent separately.
Take A Tour To Vung Vieng Floating Fishing Village
December is a quiet month to take a trip to Vung Vieng, which is a real floating village in the Bai Tu Long Bay. One of the adventures available in the area is a bamboo boat or kayak trip with locals visiting and teaching one about the area. Other cruises give short-term cultural experiences where visitors can witness pearl culture or fishing methods. This is not a bad decision in case you prefer to observe everyday life on the water, not getting with tourist masses.
Explore Thien Cung Or Sung Sot Cave
The caves in Halong Bay are an excellent alternative to winter outdoor activities, and they are dry and comfortable. Among the most spectacular caves are Sung Sot and Thien Cung with their spacious chambers and colorful lighting. During the winter season(low season), there will be smaller groups of tour groups, so you have time to see and admire the rock formations and take photos without hurrying. The majority of cruises make stops at these caves.
Enjoy Hot Seafood BBQ On A Cruise
As the weather cools down during December, a hot seafood barbecue is a popular choice. Most of the cruise ships offer a dinner that is grilled with fresh shrimps, squid, and fish, which are served in the bay. Breakfasts and dinners are served on the upper floor or in an indoor and cosy dining room, depending on the weather conditions. BBQ lunches on the beach with warm soup and local flavorful sauces are also offered on some of the island day tours. It is one of the most pleasing forms of enjoying seafood in Halong during winter.
Soak In A Japanese-Style Onsen At Yoko Onsen Quang Hanh
When the air turns crisp in December, spending a few hours in hot mineral springs is the perfect way to relax. Just 15 kilometers from Halong City, Yoko Onsen Quang Hanh offers a full Japanese-style spa experience, complete with indoor and outdoor hot baths, stone saunas, and even salt steam rooms. Entry tickets start from around 350,000 VND. It’s a great winter treat, especially if you’re not staying overnight on a cruise.
Cruise Through Bai Tu Long Bay
Bai Tu Long Bay is often skipped by mass tourism, but in December, it becomes even more special. The skies are usually clear, and the cool, dry air gives the limestone cliffs and emerald waters a sharper, more vivid look. This area feels untouched compared to the main routes, and you can find small-group cruises that include kayaking, floating villages, and beach stops. If you prefer a quieter route and want better photos with fewer people in them, Bai Tu Long in winter is a top pick.
Visit Quang Ninh Museum
Not all winter days are ideal for the water, so Quang Ninh Museum in Ha Long City is a smart backup. The building itself is a striking all-black glass cube by the sea, perfect for quick snapshots. Inside, you’ll find exhibits on coal mining, local history, and natural heritage, all with bilingual labels. It’s fully heated, rarely crowded in December, and takes about 1-2 hours to explore. You can combine it with a walk along the nearby coast or stop by the Halong Market for a bite.
Explore The Halong Night Market
As the year winds down, Halong Night Market becomes a cozy evening stop for both locals and travelers. You’ll find dozens of food stalls offering hot snacks like grilled oysters and seafood skewers. December is also a great time to shop for year-end souvenirs, handmade pearl jewelry, and festive decorations. The market opens around 5 PM and stays lively until late. It’s located near Sun World, so you can pair the visit with a walk along the nearby marina.
What To Pack For Halong Bay In December?
Halong Bay in December isn’t too cold, but the wind on the water can easily slip through thin clothes. Most of your time will be spent outside, whether on boats, islands, or walking through caves. Wearing the right things helps you stay warm without carrying too much.
Warm and Weather-Ready Clothing
Temperatures in December stay mild, but the wind on the water can make it feel colder than expected. Most people feel comfortable in light layers, something easy to add or remove. Long pants and long sleeves are also more practical for caves or sitting on an open boat.
Practical Footwear
You won’t be hiking much, but you’ll still walk over wet stones, boat steps, and uneven cave paths. Grippy walking shoes make all the difference, even on short routes. Some travelers also pack soft slippers or sandals to wear on the cruise, just for comfort after a long day out.
Rain and Wind Protection
December has very little rain, but mist and chilly breezes are common on open water. A compact raincoat or waterproof jacket will come in handy during early morning excursions. A scarf or beanie is also useful, especially for overnight cruises or long days outdoors.
Daily Essentials and Personal Items
Pack basic items like sunscreen, lip balm, and hand cream, the cool air can dry your skin faster than you expect. A small power bank, a reusable water bottle, and hand sanitizer will be useful throughout the trip. If you’re planning to kayak or take lots of photos, a dry bag will help protect your electronics from the occasional splash.
Travel Tips For Visiting Halong Bay In December
The bay slows down in winter, and so should your plans. Paying attention to small details helps you enjoy the season instead of chasing sights.
- Some cruise cabins are certainly cold overnight, especially if you have no windows or are on a lower deck cabin. Requesting a top-deck room will really help with comfort.
- Mornings can be misty, at least until 9:30 AM, so booking excursions that involve kayak tours or cave visits later in the day improves the chance of warmth and visibility.
- Hot water in the cruise bathroom showers can be unpredictable during peak times, so showering in off-hours (before 6 PM or after 9 PM) gives better pressure and heat.
- Seafood is served almost every meal, but if you’re sensitive to cold-weather digestion, you can ask for hot soup or cooked vegetables as a side. Most cruises are flexible.
- Most overnight boats anchor in quiet areas around 9 PM, so evenings are better spent with tea on the deck or a short walk around the boat than expecting lively entertainment.
- Thick fog in late December can delay boat transfers back to the harbor by 30–60 minutes, so avoid tight schedules on your return day.
- Laundry services on cruises are usually limited or unavailable, so packing enough warm basics helps avoid discomfort if clothes get damp.
- Some onshore attractions like Quang Ninh Museum are quieter on weekday mornings, making them a good backup if your cruise is affected by weather.
- Booking directly through cruise websites in early December can give better rates and clearer winter-specific info than general travel platforms.
Final Thoughts: Is December A Good Time To Visit Halong Bay?
The best thing about Halong Bay in December is the space it gives you: on the boat, in the caves, and in the quiet air between the limestone cliffs. It’s easier to breathe, to slow down, and to enjoy each stop without the rush. The mist changes how the bay looks and feels, and the stillness becomes part of the experience. Plan your trip with Seni World and catch Halong in a rare and quieter mood.
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