Chaweng Noi · Beaches
Coral Cove (Ao Thian)
A tiny rocky cove between Chaweng and Lamai with the clearest water on the island and the best free shore snorkeling: live coral on the rocks on both sides, fish a few metres from the sand. About 100-200 metres wide, minimal facilities.
- Free
- Chaweng Noi
- about 2 hours
- Checked 25 Sept
Insider tips
- Go in the morning: water is calmest and visibility highest before the wind picks up.
- Snorkel at or just before high tide for safe depth over the coral.
- Wear water shoes - sea urchins are common on the rocks.
- Never stand on or touch the coral; it is alive and fragile.
- Bring your own mask if you can - rental options nearby are basic.
- Combine with Silver Beach, the next cove south, on the same morning.
The story
Coral Cove (Thai name: Ao Thian) is a very small cove on the east coast between Chaweng and Lamai - only about 100-200 metres of reddish-tan sand between rocky headlands. It is famous for one thing: the best snorkeling from the shore on Koh Samui, completely free. The rocky outcrops on both sides of the cove carry live hard and soft coral, with parrotfish, angelfish, clownfish in anemones, moray eels and many smaller reef fish.
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Local guides report visibility of 8-12 metres in good conditions. Swimming is good too - the water is deep and clean compared with most Samui beaches - but there is little space on the sand and almost no facilities. Access is down a steep track from the ring road (about 10 minutes by scooter from Chaweng), with a small parking area at the top.
The track and the rocks keep crowds moderate. For snorkeling, go in the morning when the water is calmest, and at or near high tide so there is enough depth over the coral. Sea urchins are common on the rocks - wear water shoes and never stand on coral.
Best season is roughly November to April; in the monsoon months the cove can be rough and murky.
Good to know
- Open 24 hours
- Free
- about 2 hours
- Morning, near high tide, November-April for the clearest water
- Fully weather dependent
- Good for couples: Yes
- Scooter access: Yes
Plan a visit
Free route: you go by your own scooter, car or on foot and we work out the order. Private tour: a local driver picks you up and takes you.
Checked 25 Sept 2026 · 7 sources
Sources and last check
- Last checked
- 25 Sept 2026
- What was checked
- Details checked 25 Sept 2026
- Next check due
- September 2027
Official sources
No official source published yet for this page.
Plus 7 other references and local research.
