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.

Sandstone ledges and white sand along a Koh Samet beach on a sunny day
A beach on Koh Samet's east coast.
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.

Beach umbrellas and bungalows under trees along the bay of Ao Phai
Ao Phai, Koh Samet.
The crescent of Ao Wong Duean in soft early-morning light
Ao Wong Duean in the early morning.

Make time for the local food

What to eat and where to look

01

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.

02

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.

03

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.

Gentle waves on Hat Sai Kaew beach under a blue sky
Hat Sai Kaew, Koh Samet.
Turquoise sea seen through trees from a headland on Koh Samet
The sea from a headland on Koh Samet.

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.

A speedboat pulled up on the sand at Koh Samet
A speedboat at a Koh Samet beach.

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.

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