Ask our guests what they remember about Cat Ba and most of them say the same thing, and it is not the view from a boat deck. It is the hour they spent paddling into a lagoon with nobody else in it. Lan Ha Bay is arguably the best beginner kayaking water in Vietnam — sheltered, shallow near the shore, and full of places a boat cannot follow you into.
Do you need experience? No.
Almost everyone who kayaks here has never kayaked before. The bay is enclosed by hundreds of limestone islands, which means there is very little swell and, on most days, very little wind. Two people in a sit-on-top kayak get the hang of it within a few minutes. Children ride in the middle with a parent at each end.
What does catch people out is not skill but stamina: an hour of paddling uses shoulders you have not used in years. Plan for shorter than you think on day one.
Where to kayak
- From a day boat. Most full-day Lan Ha Bay tours anchor somewhere sheltered and hand out kayaks for an hour. This is how the majority of visitors do it, and it is the easiest.
- From a beach. Hire directly at a bay beach and stay within the cove — simple, cheap, no schedule.
- Guided half-day trip. A guide takes you through the caves and tunnels that are hard to find alone, and knows the tide.
The places worth paddling to
- Through-caves into hidden lagoons. Several karsts have tunnels at sea level that open into enclosed lagoons. They are only passable at certain tides, which is exactly why local guides earn their money.
- Floating fishing villages. Paddling quietly past a working village is a completely different experience from motoring past it.
- Empty beaches. Dozens of small sand coves on the karst islands are reachable only by kayak.
- Monkey Island and the shallows around it. Popular, but the water is spectacular.
What it costs
| Typical 2026 price | |
|---|---|
| Kayak hire, per hour | 100,000–150,000 VND |
| Kayaking included in a full-day boat tour | usually free within the tour price |
| Guided half-day kayak trip | 350,000–600,000 VND |
| Night kayaking, bioluminescent plankton | 300,000–500,000 VND |
Night kayaking and the glowing water
In the warm months — broadly May to October — the bay carries bioluminescent plankton that light up bright blue when disturbed. You paddle out after dark, stop, and drag a hand through the water. It is the single most surprising thing on offer here.
Two honest caveats: it needs a dark night, so avoid the days around a full moon, and the intensity varies week to week. Nobody can promise it. When it works, it is unforgettable.
Safety: the short list
- Wear the life jacket. Not around your waist. On.
- Stay inside the bay. Beyond the shelter of the islands, wind and swell build quickly.
- Watch for boat traffic. A kayak is invisible from a tour boat’s wheelhouse. Cross open channels quickly and directly.
- Don’t enter caves alone on a rising tide. The clearance changes fast.
- Go in the morning. Afternoon wind is the usual reason a paddle stops being fun.
- Check the forecast. July to September is storm season; operators cancel for good reason.
What to bring
- Dry bag for phone and cash — assume everything gets wet
- Sun shirt rather than sunscreen; you burn from the water reflection
- Hat with a cord, sunglasses with a strap
- Water. More than you think
- Sandals with a heel strap, not flip-flops
The best time of year
Kayaking works year-round, but late September to November is the sweet spot: warm water, calm air, low humidity and few boats. May and June give the brightest turquoise water. December to February is cool and grey but eerily quiet.
Staying with us in Viet Hai
Lan Homestay is a family-run guesthouse in Viet Hai village, inside Cat Ba National Park. We have thatched-roof garden bungalows and mountain-view rooms, all with private bathrooms, at a fair village rate — message us for the current one.
Bicycle hire is 30,000 VND per bike for the whole day (a little over one US dollar). No road links our valley to the rest of the island, so there is no through traffic — most guests only understand what that means once they are riding it.
Evenings here are a family dinner: one long table, everyone staying that night eating together — garden vegetables, island seafood, our own herbs. If you would rather eat on your own schedule, our quick-food menu is available all day with 20 minutes’ notice. For something special — seafood hotpot or a seafood BBQ — tell us one day in advance so we can buy fresh from the boats that morning.
We also arrange what is awkward to organise from abroad: boat transfers from Cat Ba town or Ben Beo pier, full-day Lan Ha Bay boat tours, kayaking, night kayaking to see bioluminescent plankton in the warm months, and guided treks in the national park.
Book or ask us anything:
Website: lanhomestay.com
WhatsApp: +84 363 934 325
Email: info@lanhomestay.com
Find us: Thon 2, Viet Hai Village, Cat Ba Island, Hai Phong, Vietnam
Keep reading
- Best Time to Visit Cat Ba Island: A Month-by-Month Guide
- Best Attractions in Lan Ha Bay: Cai Beo Village, Monkey Island & More
