Nam Du sits about 83 km off the southwestern coast of Vietnam (베트남 / 越南 / ベトナム) — a scattering of 21 islands where fishing boats outnumber tourists and the loudest sound most afternoons is a rooster losing an argument. If you've done Phu Quoc and want something rawer, this is it.

What Nam Du Is

Nam Du is an archipelago in the Gulf of Thailand. Hon Lon (Big Island) is the main island where most guesthouses and the ferry port sit. Around it, smaller islands — Hon Ngang, Hon Mau, Hon Dau, Hon Hai Bo De — offer day-trip beaches and snorkeling. The population is mostly fishing families. Tourism infrastructure arrived in the last decade, but it's still basic: no ATMs on most islands, limited wifi, and electricity can be patchy on the outer islands.

The archipelago was largely off-limits to foreign visitors until around 2017. Even now, it sees a fraction of the traffic that Phu Quoc (푸꾸옥 / 富国岛 / フーコック) or Con Dao gets. That's the appeal.

Why Travelers Go

  • Empty beaches. Bai Men, Bai Cay Men, and Bai Nom on Hon Lon have clear water and almost no one on weekdays.
  • Cheap seafood. Grilled squid, steamed "ghẹ" (swimming crab), and sea urchin bought straight off boats. Expect 150,000–300,000 VND for a seafood spread for two.
  • Island-hopping by boat. Rent a fishing boat (500,000–800,000 VND for a half day) and hit 3-4 islands.
  • No resort polish. This isn't a curated experience. It's a fishing archipelago that happens to have gorgeous water.

Best Time to Visit

Dry season runs from November through April. The sea is calm, ferries run on schedule, and visibility for snorkeling is best in March-April.

Avoid June through September — swells can cancel ferries for days, and some guesthouses on outer islands close entirely. October is transitional; you might get lucky with weather, or you might get stuck on Hon Lon for an extra night.

How to Get There

The jumping-off point is Rach Gia, a port city in the Mekong Delta (메콩 델타 / 湄公河三角洲 / メコンデルタ).

Getting to Rach Gia

  • From Saigon: Buses from Mien Tay station take about 6 hours (180,000–220,000 VND). Night buses depart around 11 PM and arrive at dawn — convenient for catching the early ferry.
  • From Can Tho: 3-hour bus (100,000 VND) or private car.
  • Flights: There's a small airport in Rach Gia with connections from Saigon (사이공 / 西贡 / サイゴン) (Vietnam Airlines, ~45 minutes), though schedules change seasonally.

Rach Gia to Nam Du

Superdong and Ngoc Thanh run high-speed ferries from Rach Gia port to Hon Lon. Journey time is roughly 2.5 hours. Tickets cost 230,000–280,000 VND one way. Book a day ahead during weekends or holidays — the boats fill up. Departures are typically at 8:00 AM, with a possible second sailing at 8:30 AM in high season.

Bring motion sickness pills. The crossing can get choppy even in dry season.

Peaceful seascape with fishing boats and islands in Ba Ria - Vung Tau, Vietnam.

Photo by Luke Dang on Pexels

What to Do

Beaches on Hon Lon

Bai Men is the closest beach to the port — walk 10 minutes north. It's small, flanked by boulders, and has a couple of drink shacks. Bai Cay Men requires a motorbike ride over the island's spine road (rent one for 150,000 VND/day from any guesthouse). The road is steep, potholed, and scenic.

Island Hopping

Arrange a boat at the port or through your guesthouse. A standard route hits Hon Ngang (swimming, snorkeling off the rocks), Hon Mau (a fishing village with a lighthouse hike), and Hon Hai Bo De (the bluest water in the chain). Full-day trips with lunch run about 400,000–600,000 VND per person in a shared group.

Snorkeling

The coral around Hon Hai Bo De and the channel between Hon Ngang and Hon Dau is decent — not Nha Trang (냐짱 / 芽庄 / ニャチャン) quality, but you'll see clownfish, parrotfish, and soft coral. Bring your own mask; rental gear is limited and often worn out.

Sunset at Bai Dat Do

A red-earth beach on Hon Lon's western side. The dirt is literally red-orange against turquoise water. Best at golden hour. Reach it by motorbike — the turn-off isn't signed, so ask your guesthouse host to mark it on Maps.me.

Where to Eat

There are no restaurants in the conventional sense. Guesthouses cook meals (order by 3 PM for dinner), and a few "quán nhậu" (drinking-food spots) near the port grill whatever came off the boats that morning.

  • Grilled cuttlefish with salt-pepper-lime: 80,000–120,000 VND per plate.
  • Steamed crab with tamarind: seasonal pricing, usually 200,000–350,000 VND per kg.
  • Com tam with grilled fish: 40,000–50,000 VND at the market stalls near the port.
  • Fresh sea urchin ("nhím biển"), eaten raw with lime, available November–March.

Bring snacks from the mainland. Options on the island are limited to instant noodles and crackers from mini-marts.

Where to Stay

Most accommodation is on Hon Lon within walking or short motorbike distance of the port.

  • Budget (200,000–400,000 VND/night): Family-run guesthouses with fan rooms, shared bathrooms, and home-cooked meals. Basic but clean. Try the cluster near Bai Men.
  • Mid-range (500,000–900,000 VND/night): A handful of newer mini-hotels with air conditioning, private bathrooms, and sea-view balconies. Book on Zalo or call ahead — many aren't listed on international platforms.
  • Homestays on outer islands: Hon Mau has a few homestays, but confirm availability before taking the boat over. Getting stuck without a bed is a real possibility.

Explore the breathtaking limestone formations of Ha Long Bay, a UNESCO World Heritage site in Vietnam.

Photo by Nguyễn Văn Quý Ngọc on Pexels

Practical Tips

  • Cash only. There's no ATM on Nam Du. Withdraw in Rach Gia. Bring more than you think — boat rentals, seafood splurges, and an extra night add up.
  • Phone signal is spotty on outer islands. Viettel has the best coverage.
  • Motorbike roads on Hon Lon are steep and uneven. If you're not confident on a manual bike, walk or hire a xe om (motorbike taxi, 20,000–50,000 VND per trip).
  • Trash: Nam Du has a waste problem — there's no proper disposal system. Pack out what you bring in.
  • Electricity on smaller islands runs on generators, sometimes only evenings.

Common Mistakes

  1. Booking ferries for the same day you arrive in Rach Gia. If your bus is late, you miss the boat. Stay overnight in Rach Gia and catch the morning ferry fresh.
  2. Not bringing enough cash. 2,000,000 VND per person per day is a comfortable buffer.
  3. Expecting Phu Quoc-level infrastructure. Nam Du has no cocktail bars, no spa resorts, no English menus. That's the point.
  4. Skipping motion sickness meds. Even seasoned travelers get queasy on the crossing.
  5. Only staying on Hon Lon. The outer islands are the highlight. Budget at least one full day for boat hopping.

Final Note

Nam Du rewards travelers who are comfortable with uncertainty — cancelled boats, unplanned extra nights, meals that depend on the morning catch. It's not polished, and it's not trying to be. If you want a southern Vietnam island experience that still feels like a discovery rather than a product, this is one of the last easy options.

— FIN —

Last updated · May 26, 2026 · independently researched, never sponsored.