Why Cat Ba first
Cat Ba is the largest island in the Lan Ha Bay archipelago, the quieter, less crowded twin of Ha Long Bay, and it packs scenery, trekking, and coastline into one compact base. Visitors come for two or three days: a day boat or overnight cruise through Lan Ha Bay’s karst towers, a trek into Cat Ba National Park, and a sunset at Cannon Fort over the harbor. The island is small, roughly 20 km from tip to tip, so you can combine water and forest without long transfers. Lan Ha Bay has the same limestone islands as Ha Long but far fewer boats, which makes kayaking and swimming calmer and cleaner. The national park protects forest and the rare Cat Ba langur, and the hike to Viet Hai village or Ngu Lam peak gives a genuine jungle half-day. Cat Ba town is lively but not a party island, and the seafood is excellent and cheap. Weather matters: the dry, mild windows of April to June and September to November are best, while summer can bring storms and winter can be cool and misty. Prices below were checked October 2026 against Booking.com and Klook listings.
Where to stay
Most visitors base in Cat Ba town along the waterfront, where guesthouses and mid-range hotels run roughly $15-40 a night, and a handful of bay-view rooms climb to roughly $50-70 (October 2026 listings). Hostels with dorms cost roughly $6-12 a bed. For quiet, stay on the Cat Co beaches side of town or book a bungalow on the Lan Ha side, where you trade convenience for a calmer shore. A night on a Lan Ha Bay cruise is the highlight for many, but sleep on land at least one night to explore the island. Book early in the April-June and September-November windows, when domestic tourists and cruises fill the town.
Getting around
The island is served by bus and ferry from Hanoi via Hai Phong and Cat Ba port, a trip of roughly 3-4 hours including the crossing; a combined bus-and-ferry ticket runs roughly $10-15. Once on the island, taxis, electric buggies, and rented scooters handle the road between the town and the national park. Scooter rental costs roughly $6-10 a day, and a taxi across the island runs roughly 100,000-200,000 VND. Lan Ha Bay day boats and overnight cruises cost roughly $20-30 and $120-200 respectively, usually including transfers, kayaks, and lunch. Note that some ferries do not carry motorbikes, so confirm before you plan to bring a scooter across.
Quick facts
- Best area to stay: Cat Ba town waterfront for convenience; Cat Co beaches or Lan Ha side for quiet.
- Getting around: scooter roughly $6-10 a day; bus-and-ferry from Hanoi roughly $10-15.
- Must-try: steamed crab and grilled squid, a Lan Ha Bay kayak, and a hike to Ngu Lam peak.
Frequently asked questions
How many days do I need on Cat Ba?
Two days cover a Lan Ha Bay boat trip and an afternoon at Cannon Fort, with time for the beach. A third day lets you trek into the national park to Viet Hai village or climb Ngu Lam peak, roughly a 2-3 hour return walk. A classic Lan Ha Bay day cruise runs roughly $20-30 per person (October 2026 price level).
What does a day on Cat Ba cost?
Budget travelers spend roughly $40-80 per day including a guesthouse, local seafood meals, a scooter, and a day boat. An overnight Lan Ha Bay cruise adds roughly $120-200, which usually includes cabin, meals, and activities, so it is a splurge rather than a daily norm (October 2026 price level).
When is the best season to visit Cat Ba?
April to June and September to November are the sweet spots, with mild temperatures and calmer seas. July and August are hot and can bring storms that cancel boat trips. December to March is cooler and often misty, and some cruises run a reduced schedule, so check before booking.
Is Cat Ba a good alternative to Ha Long Bay?
Yes. Lan Ha Bay shares the same karst scenery with far fewer boats, so kayaking and swimming feel calmer and cleaner. Cat Ba also adds national park trekking, which Ha Long city does not offer. A Lan Ha day cruise runs roughly $20-30 per person, often cheaper than equivalent Ha Long trips (October 2026 price level).
Do I need to book a cruise in advance?
In the April-June and September-November windows, yes — book at least 2-3 days ahead, and a week ahead for weekends. Outside those peaks you can usually arrange a day boat on arrival in Cat Ba town. Confirm whether transfers, park fees, and kayaks are included, since prices of roughly $20-30 per person sometimes exclude them (October 2026).