Koh Larn.
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Things To Do · In the water

Swimming

Updated 16 June 2026 · We visit. We don't sell placement.

8.6/10
corewarmcalm

The whole point — warm, clear water and gentle bays once you're clear of the boats.

Strip away the parasails and the jet skis and the real reason Koh Larn exists is the swim: warm, clear water and gentle, shelving bays a 40-baht ferry ride from Pattaya. The west and south beaches — Samae, Tien and Nual — give the clearest, calmest water; Tawaen is fine inside its roped zone but busier and murkier. The single most important habit is to stay inside the marked swimming areas and well clear of the boat and jet-ski lanes, which is where the genuine risk on this island lives. Mind the sun, check for any jellyfish notices in the monsoon months, and the swimming here is a simple, reliable pleasure.

How it works

Pick a clear beach, swim inside the roped-off zone, and enjoy. No cost, no gear, no booking — just the warm Gulf and a gentle entry on the best beaches.

Who it's for

Everyone. Strong swimmers can explore the rock edges; families and weaker swimmers should stay in the calm, shallow, marked zones.

What to expect

Warm (often 28–30°C) water, gentle waves on the sheltered beaches, and the best clarity on calm mornings in the dry season.

Safety

Swim inside roped zones, mind boat lanes and currents, watch children closely, heed any jellyfish or red-flag warnings, and don't swim alone on the remote beaches with no services.

Good to know

  • Stay in marked swim zones
  • Reef-safe sunscreen or a rash guard
  • Check for seasonal jellyfish notices
  • Mornings are calmest and clearest
For it
  • Free and the best thing here
  • Warm, gentle water on the good beaches
  • No gear or booking needed
Against it
  • Boat/jet-ski lanes are the real hazard
  • Murkier and busier at Tawaen
  • Seasonal jellyfish in the monsoon

Alternatives: Want to see fish while you swim? Add a mask and it becomes snorkeling. Can't swim but want to be in the water? Sea walking at Tawaen.

Where to do it

Samae Beach
No.1 · West coast Tien Beach
No.2 · South-west coast Nual Beach (Monkey Beach)
No.4 · South coast Tawaen Beach
No.3 · North-east coast
Swimming FAQ

Quick answers

Where is the best swimming on Koh Larn?

The west and south beaches — Samae, Tien and Nual — have the clearest, calmest water. Tawaen is fine inside its roped swim zone but busier and less clear.

Is it safe to swim at Koh Larn?

Yes, with sense: stay inside the marked swimming zones and well clear of boat and jet-ski lanes (the main hazard), watch children, and heed any jellyfish or red-flag warnings, mainly in the monsoon months.

More like this
Snorkeling
In the water Parasailing
Above the water Jet Ski
On the water Banana Boat
On the water Sea Walking
Under the water
From the journal

More reading

Monkey Beach (Nual): seeing the monkeys without losing your lunch
Tips · 4 min read Koh Larn snorkeling: book a tour or do it yourself?
Compare · 5 min read Which Koh Larn beach is right for you?
Compare · 5 min read
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We visit. We don't sell placement.

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