Cham Islands Vietnam: Your Complete Guide to Cu Lao Cham’s Beaches and Reefs

The Cham Islands sit 15 km off the coast of Hoi An, close enough to reach by speedboat in 20 minutes yet utterly removed from the ancient town’s lantern-lit streets. This archipelago of eight islands — known in Vietnamese as Cù Lao Chàm — is a UNESCO Man and Biosphere Reserve where coral reefs still teem with fish, the beaches stay uncrowded even in high season, and the only sound at night is the ocean breaking against the rocks. If Cham Islands Vietnam isn’t yet on your itinerary, it deserves to be.

Most visitors to Hoi An take a day trip to the islands without knowing quite what they’re getting into. They expect a pleasant beach afternoon and come back having snorkelled over some of the healthiest coral in central Vietnam, eaten the freshest seafood of their trip, and wondered seriously about staying the night. That recalibration is standard. Cu Lao Cham has a way of expanding its footprint in your travel plans.

Why the Cham Islands Vietnam Are Worth the Boat Ride

The Hoi An area is Vietnam’s most visited stretch of coast, yet the Cham Islands manage to feel like a different world. The archipelago shares UNESCO status with Hoi An Ancient Town — it’s part of a broader biosphere reserve that UNESCO recognised in 2009 for its marine biodiversity and the traditional fishing culture that still sustains the resident population of around 3,000 people on Hon Lao, the largest island.

That UNESCO designation has practical benefits for visitors. Fishing restrictions and a ban on hard coral extraction have allowed the reefs to recover noticeably over the past decade. The islands are also free from the resort development that has altered the character of most Vietnamese island destinations — there are no beachfront hotels, no jet ski rentals, no all-inclusive packages. What you get instead is a functioning fishing community, a coastline of volcanic rock and white sand, and underwater visibility that regularly reaches 15 metres on a good day.

The islands close to visitors from November to February due to rough seas and monsoon conditions, which ensures the marine environment gets an annual rest. The best time to visit is March through October, with May to August offering the clearest waters for snorkelling and diving. For a broader comparison of Vietnam’s island options, our guide to Vietnam island hopping covers the full range from north to south.

Cham Islands Vietnam: The Best Snorkelling and Diving Spots

The Cham Islands’ marine environment sets them apart from other island destinations in central Vietnam. The waters around the archipelago support over 165 species of coral, 202 species of fish, and a range of larger marine life including sea turtles, cuttlefish, and occasional reef sharks — making Cu Lao Cham one of the best snorkelling and diving destinations in central Vietnam.

Bai Chong is the most accessible snorkelling spot and the one served by most day trip operators. The bay on Hon Lao’s south coast has calm, relatively shallow water over mixed sand and coral. Coral coverage is good, fish life is abundant, and the bay is sheltered enough for nervous swimmers. Visibility typically runs 8–12 metres in peak season.

Hon Tai and Hon Ong, two of the smaller outer islands, have more exposed reefs with stronger currents that support harder coral formations and attract larger pelagic species. These sites suit experienced swimmers and scuba divers rather than casual snorkellers — but the underwater scenery is more dramatic, with drop-offs and overhangs that harbour lionfish, moray eels, and schools of surgeonfish.

For certified divers, Cu Lao Cham Diving runs guided dives to the outer reef sites from a base at Bai Huong village. Two-dive day trips cost around 1,200,000–1,500,000 VND including equipment. The guides are knowledgeable about reef ecology and will point out creatures you’d otherwise swim right past. Our guide to water activities in Vietnam covers other options if you want to extend your aquatic adventures across the country.

The Best Beaches on the Cham Islands

The Cham Islands have beaches of distinctly different characters, each worth visiting if you have more than a single day.

Bai Chong is the de facto main beach — a gently curving crescent of pale sand fronted by calm turquoise water, with a string of seafood shacks, rental chairs, and snorkel equipment operators along the shore. It gets busy on weekends and during peak summer months, but retains more of a fishing-village character than you might expect.

Bai Huong, on the island’s south coast, is quieter and more scenic. The beach sits in a bay flanked by forested headlands, with the fishing village behind it and good snorkelling off the southern rocks. This is where the island’s small scuba operation is based, and it attracts a slightly more adventurous crowd. Sunrise here, with the mist still on the hills and fishing boats heading out, is worth the early alarm.

Bai Xep is a smaller cove on Hon Lao’s north coast, accessible only by boat or a 30-minute jungle walk. The reward is a beach that sometimes has no other people on it at all — white sand, clear water, and the sound of the forest behind you. Ask at Bai Chong for a boat transfer (around 100,000–150,000 VND return). If hidden beaches are your thing, our hidden beaches Vietnam guide has more.

Cham Islands Travel Guide: Getting There from Hoi An

Getting to the Cham Islands from Hoi An is well organised. The journey takes 20–40 minutes depending on your boat type, with departures running throughout the morning from the Cua Dai or Bach Dang piers.

Speedboat is the fastest option (20–25 minutes) and the one used by most day trip operators. The boats are covered and hold around 10–15 passengers. The ride can be choppy in wind conditions — if you’re prone to seasickness, sit in the middle or take a motion sickness tablet beforehand.

Slow boat (40–50 minutes) is cheaper and calmer, used mainly by island residents and budget travellers. It departs from Cua Dai pier and docks at Bai Chong. This is the option if you want to watch the coast recede slowly and feel less like a tourist package and more like someone going somewhere.

Day trips from Hoi An typically include boat transfers, snorkelling gear, a guide, and lunch — costs range from 350,000 VND (budget group tours) to 1,200,000 VND for private half-day tours with better equipment and fewer people. Families travelling with children will find the Cham Islands day trip one of the most child-friendly activities in the Hoi An area — calm bays, clear water, and a boat ride that most kids find genuinely thrilling.

Return boats leave the island by around 4pm. If you miss the last departure — easy to do when you’re having too good a time — you’ll need to arrange private transport or stay the night, which is not the worst outcome.

Staying Overnight on the Cham Islands

The Cham Islands have a growing number of homestays and small guesthouses in Bai Huong and Bai Chong villages. Staying overnight transforms the experience: after the day trippers leave on the last boat, the island becomes extraordinarily peaceful. The evening brings out the fishermen, the village fires up for dinner, and the night sky — free from city light pollution — is properly dark and filled with stars.

Accommodation is basic by city standards — fan rooms, shared bathrooms, cold showers — but immaculately clean and priced at around 200,000–350,000 VND per person including dinner and breakfast. Hosts typically serve whatever was caught that day: grilled squid, steamed clams, fried fish with turmeric, and bowls of mì Quảng (Quang Nam-style noodles) for breakfast. It is, without question, some of the best eating you’ll do in the Hoi An area.

The UNESCO biosphere status means strict waste management rules apply. No single-use plastic is sold on the island, accommodation is capped at a sustainable level, and coral touching is actively discouraged. These aren’t just rules — they’re why the reef still looks the way it does, and they deserve respect.

What to Eat on the Cham Islands: Seafood at the Source

Eating on the Cham Islands means eating whatever came off a boat in the last 12 hours. The island’s fishing community has supplied seafood to mainland markets for generations, and what gets served in the village shacks is the same quality as what gets sold at a premium in Hoi An’s restaurants — at a fraction of the price.

The standout dish is cá thu nướng — grilled Spanish mackerel marinated in lemongrass and chilli, served with rice, a herb plate, and a bowl of fish sauce. Mackerel is abundant in the waters around Cu Lao Cham and at its best in the summer months. A full serving costs around 80,000–120,000 VND at the village shacks.

Steamed or grilled squid (mực) is equally compelling — the squid here is small and sweet, nothing like the chewy versions served in tourist restaurants. Clams cooked with lemongrass, crab in tamarind sauce, and deep-fried shrimp with salt and pepper complete a seafood spread that most diners leave unable to finish. Wash it down with cold beer and eat with your feet in the sand. For more seafood eating tips and budget guidance, our Vietnam on a Budget guide has the full picture.

The Cham Islands: Vietnam’s Reef, Your Escape

The Cham Islands will not stay undiscovered forever. The UNESCO designation, improving boat connections, and growing reputation of the reefs mean that Cu Lao Cham is edging toward the mainstream. But for now, the balance is still right: enough infrastructure to make a visit comfortable, not so much that the fishing village feels like a theme park. Go soon, swim slowly, eat everything they put in front of you, and think seriously about missing the last boat home.