Hin Bai
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 Bai, also known as Sail Rock, is an iconic rock formation situated in the Gulf of Thailand, in the waters near Koh Phangan. It is one of the most celebrated dive sites in the region, reaching a maximum depth of 30 m over a reef bottom.
The site is best dived between November and May, when conditions are most favourable. Marine life at Hin Bai includes barracuda, trevally, and groupers.
Hin Bai is rated as an intermediate-level dive site, making it suitable for certified divers with some experience rather than complete beginners.
Marine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
Whale SharkRhincodon typusReported here · unconfirmed
Bluering AngelfishPomacanthus annularisReported here · unconfirmed
Bigeye TrevallyCaranx sexfasciatusReported here · unconfirmed
Hong Kong ButterflyfishChaetodon wiebeliReported here · unconfirmed
Black Longspine UrchinDiadema setosumReported here · unconfirmed
BlubberlipPlectorhinchus gibbosusReported here · unconfirmed
Longfin BatfishPlatax teiraReported here · unconfirmed
Sixband AngelfishPomacanthus sexstriatusReported here · unconfirmed
BarracudaBarracudaConfirmed present · 2 independent sources
TrevallyTrevallyConfirmed present · 2 independent sources
GrouperGrouperConfirmed present · 2 independent sources
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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