Eastern Thailand · Rayong
Koh Samet travel guide: white-sand bays close to Bangkok
Koh Samet is the nearest proper island beach to Bangkok, a narrow island of white-sand bays on the Rayong coast. It lies within Khao Laem Ya – Mu Ko Samet National Park, declared in 1981, and its east coast is a string of bays, each with its own mood, from busy to quiet.

- Suggested time
- 2–3 nights
- Where to stay
- East-coast bays
- Season and timing
- November to April for calm seas and sunshine; weekends and Thai holidays are busy.
The short answer
Stay two or three nights. Take the boat from Ban Phe, then choose your bay: Sai Kaew and Ao Phai for a lively beach, Ao Wong Duean for a crescent bay with both quiet and busy ends, or Ao Cho for peace. The island is part of a national park, so expect an entry fee. Go between November and April for the calmest seas.
Choosing a bay
Ao Phai, next to Sai Kaew Beach and an easy walk across the rocks, is a compact bay with clear water and inexpensive bungalows, bustling for most of the day, as the Ministry of Tourism and Sports' directory describes.
Ao Wong Duean is a crescent-shaped bay where boats drop off passengers; you can stay at the quieter end or join the bustle in the middle. Ao Cho is a peaceful bay with fine white sand and a jetty, good for swimming and kayaking.
The national park
Koh Samet is part of Khao Laem Ya – Mu Ko Samet National Park, about 131 square kilometres, 94 per cent of it sea, which also covers several smaller islands, according to the directory.
Pay the park fee on arrival, keep beaches clean and avoid single-use plastic.


Make time for the local food
What to eat and where to look
Beach barbecue
Grilled seafood set out on the sand in the evening at many bays.
- Where to look
- Restaurants on Ao Phai and Ao Wong Duean.
- Fit it into your day
- Dinner by the sea.
Prices often by weight; check before ordering.
Thai seafood dishes
Stir-fried squid, prawn curries and spicy salads.
- Where to look
- Bay restaurants.
- Fit it into your day
- Lunch.
Ask about chilli.
Mainland snacks at Ban Phe
The directory notes many processed-food markets at Ban Phe, near the pier.
- Where to look
- Ban Phe pier area.
- Fit it into your day
- Before or after the boat.
Dried seafood is salty.
Getting there
Boats leave from Ban Phe on the Rayong coast, which the directory describes as the port for Koh Samet. Some boats go directly to bays such as Ao Wong Duean.
From Bangkok, travel by road to Ban Phe; the nearest airport is U-Tapao–Rayong–Pattaya.


Weekends and holidays
Because it is so close to Bangkok, Koh Samet fills up on weekends and public holidays. Come midweek for quieter bays and better rates.
Book accommodation in advance for long weekends.

Practical questions
How do I get to Koh Samet?
By boat from Ban Phe on the Rayong coast.
Is there an entry fee?
Yes. Koh Samet is part of a national park; pay the fee on arrival.
Which bay is quietest?
Ao Cho is described by the directory as a peaceful, private bay.
Is Koh Samet busy?
On weekends and Thai holidays, yes. Visit midweek for quieter beaches.
Sources and checks before you travel
Reference sources for the version dated 1 October 2026. Confirm opening times, access, transport and conditions for your travel dates.
- Thailand Tourism Directory: Khao Laem Ya – Mu Ko Samet National Park ↗ — opens in a new tab
- Thailand Tourism Directory: Ao Phai ↗ — opens in a new tab
- Thailand Tourism Directory: Ao Wong Duean ↗ — opens in a new tab
- Thailand Tourism Directory: Ao Cho ↗ — opens in a new tab
- Thailand Tourism Directory: Ban Phe Beach ↗ — opens in a new tab
- Thailand.go.th: the seasons of Thailand ↗ — opens in a new tab
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A beach on Koh Samet's east coast.
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Ao Phai, Koh Samet.
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Ao Wong Duean in the early morning.
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Hat Sai Kaew, Koh Samet.
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The sea from a headland on Koh Samet.
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A speedboat at a Koh Samet beach.
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