Ha Long Bay in December is quieter, cheaper and more atmospheric than the website photos suggest. The summer crowds are gone, cruise prices drop significantly, and the region’s characteristic morning fog wraps the limestone karsts in conditions that reward anyone who brings a camera. This is the bay at its most moody and its most affordable.
December Weather in Ha Long Bay
Temperatures in December sit between 15°C and 20°C during the day, dropping to 12-15°C at night. On the water and on cruise decks, factor in a wind chill - an extra 2-3 degrees colder than on land, particularly in the morning and evening.
The weather pattern is not the blue-sky perfection of the tourism brochures. December brings frequent low cloud, morning fog, and occasional light drizzle. Rainfall is generally low (December averages around 20-30mm across the month) and multi-day rain events are uncommon. Most days are overcast but dry, with patches of sun by afternoon.
The key thing to understand is that this weather creates exceptional photography conditions. When mist sits low over the karst islands in the early morning, Ha Long Bay looks nothing like the high-season images that dominate social media. The fog gives the bay depth, atmosphere, and a quietness that most visitors never see.
Cruise Operators Running in December
For a full comparison, see our Ha Long Bay cruise guide, or browse Ha Long Bay cruises and tours with December departures.
All of Ha Long Bay’s main operators continue full December schedules. This is not a closed season - the bay remains accessible year-round, and cruise companies keep their boats running because regional Vietnamese tourism picks up slightly in December as Hanoi residents come down for weekend breaks.
Emperor Cruises (emperor-cruises.com) runs their five-star luxury itineraries year-round. December prices for their two-day/one-night itinerary start from around $430 per person, compared to $550-600 in June-August. They include kayaking, cave visits, and a cooking class as standard.
Paradise Cruises operates several vessel grades from their mid-range Paradise Elegance to the luxury Paradise Privilege. December rates for the two-day/one-night itinerary run from approximately $170 per person (Elegance) to $380 (Privilege). Summer equivalents cost $210-480.
Bhaya Cruises (now operating as Signature Cruises) offer a reliable mid-range option. Two-day/one-night itineraries cost from around $140 per person in December. The Signature Premium vessels include kayaking, Titop Island, and Luon Cave.
Orchid Classic and Indochina Junk both run December itineraries with prices starting around $110-130 per person for the two-day format. These represent the lower end of the mid-range bracket and are suitable for budget-conscious travellers who still want an overnight experience.
Budget travellers should note that the cheapest overnight cruises from Hanoi start around $65-80 per person in December, though at this price point expect smaller boats, fewer activities, and shared cabins.
Overnight vs Day Cruise in December
For most travellers the overnight cruise is the right choice - and December makes this argument even stronger.
On an overnight cruise in December, you experience the bay across two different light conditions: the late afternoon golden hour as you arrive and settle into your cabin, and the early morning fog that tends to peak around 6-8am. Both are when Ha Long Bay looks best. You also get activities - typically kayaking, cave visits, and a swimming stop - spread across a full day rather than compressed.
A day cruise from Hanoi covers roughly 300km of round-trip road travel and leaves only 3-4 hours on the water. Given the travel time involved in reaching Ha Long from Hanoi (around 3.5 hours each way), a day trip makes the economics feel poor. Day cruises cost approximately $40-65 per person in December and cover the highlights at pace.
The exception is travellers based in Ha Long City or on Cat Ba Island who are already close to the bay. In that case a half-day kayaking trip or a cheaper local boat is perfectly sensible.
Kayaking in December
Kayaking remains one of the best activities in December. The cool temperatures - typically 17-20°C on the water by mid-morning - are actually better for physical activity than the 32°C heat of July. You won’t be sweating through a paddling session in December.
Most overnight cruises include guided kayaking through Luon Cave or Ba Hang lagoon. The water is calm in December; the bay is sheltered from open-ocean swells by its geography and December wind is generally light to moderate rather than strong.
If you’re based on Cat Ba Island independently, Asia Outdoors offers self-guided kayak rental from VND 150,000 per hour and guided kayaking tours that include access to less-visited areas. Their full-day guided kayaking trip around the Lan Ha Bay side costs approximately VND 800,000-1,100,000 per person (around $32-44) and is considerably less crowded in December than in the summer months.
Cat Ba Island in December
December rates are low, so it is a good moment to search Cat Ba hotels or search Ha Long Bay hotels.
Cat Ba Island operates year-round and December is one of its better visiting months. Accommodation prices are noticeably lower - guesthouses and mid-range hotels that charge $35-50 per night in summer drop to $20-30 in December, and budget hostels run from around $8-12 per bed in dorms.
The Cat Ba National Park hiking trails remain open throughout December. The summit trail to peak Ngu Lam takes around 3 hours return and is more manageable in cool December weather than in July heat. Weather permitting, the views over Lan Ha Bay from the summit are among the best in the region.
Cat Ba Town itself is a genuine small town rather than a resort, with local restaurants serving fresh seafood at prices aimed at Vietnamese visitors rather than tourists. A grilled squid with rice costs around VND 80,000-120,000 ($3-5) in the local eateries along Ben Beo harbour. The tourist restaurants on the main strip charge two to three times as much for similar food.
Crowd Levels in December
Ha Long Bay receives significantly fewer visitors in December than in its peak summer months. Exact figures vary, but the general pattern is that June-August see the highest volumes, with December visitor numbers running roughly 40-50% lower.
In practical terms this means: shorter queues at Sung Sot Cave (entry VND 40,000), more comfortable distances between boats when anchored overnight, and more space on kayaking routes through Luon Cave. It also means that some of the smaller, cheaper boat operators may not fill their vessels to capacity and could cancel or combine itineraries.
The sweet spot for an uncrowded visit is weekdays in early-to-mid December, before the Christmas and New Year period. The week between Christmas and New Year (roughly 22 December - 3 January) sees a notable spike in Western tourist arrivals and pricing often reflects this.
What to Pack for Ha Long Bay in December
The single most common mistake in December is underpacking for warmth on the water. Photographs from the summer show people in swimwear on cruise decks. In December this is not the reality.
Essentials:
- Lightweight waterproof jacket - critical for morning deck time
- Fleece or mid-layer - for evenings and early mornings on the water
- Thermal underlayer if you feel the cold easily
- Comfortable shoes that can get wet (for kayaking and swimming stops)
- Swimwear - the water is cold (around 20-22°C in December) but some travellers still swim
Leave the flip-flops as your primary footwear at home. Cruise decks can be slippery in wet conditions and Cat Ba Town is better navigated in proper shoes.
Photography in December
December fog is the defining photographic opportunity in Ha Long Bay. The bay is essentially impossible to photograph badly when mist softens the karst peaks and flattens the water into a mirror-like surface.
The best photography times are sunrise (around 6:15am in December) and the hour immediately after, when fog is at its thickest. Overnight cruise passengers have access to this - which is another reason to choose the overnight option. By 10am on most days the fog has lifted and the bay looks similar to any other time of year.
Overcast light in the middle of the day actually produces cleaner colours on the limestone than direct midday sun, which bleaches the rock and creates harsh shadows. December’s cloud cover is arguably better for landscape photography than the bright conditions of July.
For camera gear, bring a UV filter and lens cloth. Salt spray on the water and moisture from fog affect exposed glass quickly.
Pricing Summary for December
| Option | December Price | Peak (Jun-Aug) |
|---|---|---|
| Budget overnight cruise (2D/1N) | $65-80/person | $90-110/person |
| Mid-range overnight (2D/1N) | $110-170/person | $160-230/person |
| Luxury overnight (2D/1N) | $300-450/person | $400-600/person |
| Day cruise from Hanoi | $40-65/person | $55-80/person |
| Cat Ba guesthouse | $20-30/night | $35-50/night |
| Kayak rental (Asia Outdoors) | VND 150,000/hr | VND 150,000/hr |
Prices are approximate as of 2026 and vary by booking platform and lead time. Booking direct with operators typically saves 10-15% versus booking aggregators.
If you plan to stay on land, we compare options in our Ha Long Bay hotel guide, and our Cat Ba hotel guide covers the island. For a wider route, see our 1 week in northern Vietnam itinerary.
For more on Ha Long Bay activities and kayaking options, see our dedicated guides.