Hin Wong Bay
Conditions & tides
Scored by DiveConnect's site-physics model
Marine forecast via Copernicus Marine. Score is a rule-based guide from swell/wind vs. the site's exposure — always dive your own assessment.
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About this site
Hin Wong Bay is a reef dive on the east coast of Koh Tao, Thailand, known for its massive rock formations and consistently excellent visibility. The site sits within a protected bay and reaches a maximum depth of 14 metres, making it accessible to Open Water-certified divers and well suited to beginners.
The terrain is built from hard coral over a granite reef, with the same boulder and ridge topography that characterises Koh Tao's underwater landscape. Visibility is reliably good and settles best at low tide, which is the recommended time to dive the site.
The reef holds rays, cuttlefish, small reef fish, parrotfish, fusiliers, rabbitfish, unicornfish, and sea snakes, with blacktip reef sharks also present in the area. The site is a peaceful dive with no strong currents, and the reef itself is the main draw.
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Hin Wong Bay is reached by boat, with the island's dive sites generally lying within a 20- to 45-minute ride from the pier. Currents are mild, the bay is protected, and the calm conditions make it a practical training site as well as a relaxed option for certified divers who want an unhurried reef dive on the quieter east side of the island.
Marine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
Hong Kong ButterflyfishChaetodon wiebeliReported here · unconfirmed
Doublebar RabbitfishSiganus virgatusReported here · unconfirmed
Blue-barred ParrotfishScarus ghobbanReported here · unconfirmed
Redbreast Maori WrasseCheilinus fasciatusReported here · unconfirmed
Blackeye ThicklipHemigymnus melapterusReported here · unconfirmed
Longfin BannerfishHeniochus acuminatusReported here · unconfirmed
Slingjaw WrasseEpibulus insidiatorReported here · unconfirmed
Pink Skunk AnemonefishAmphiprion perideraionReported here · unconfirmed
Titan TriggerfishBalistoides viridescensReported here · unconfirmed
Scissortail SergeantAbudefduf sexfasciatusReported here · unconfirmed
ParrotfishParrotfishConfirmed present · 2 independent sources
FusilierFusilierReported here · unconfirmed
UnicornfishUnicornfishReported here · unconfirmed
Mourning DoridJorunna funebrisObserved near here · iNaturalist
Surf ParrotfishScarus rivulatusObserved near here · iNaturalist
Durable tips from divers — access, hazards, marine life, facilities. For day-of conditions, use the report tool in the conditions card above.
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