Boulder City
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.
Dived here today? How were conditions vs. what we showed?
About this site
Boulder City sits off Racha Yai Island, a short boat trip south of Phuket in the Andaman Sea. As the name suggests, the site is characterized by large granite boulders scattered across the seabed, a formation typical of this island's dive sites. It is commonly reached alongside other Racha Yai spots as part of day trips from Chalong Pier or Phuket's southern coast.
AI overviewMarine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
Guam ScorpionfishScorpaenodes guamensisReported here · unconfirmed
Moon WrasseThalassoma lunareReported here · unconfirmed
Moorish IdolZanclus cornutusObserved near here · iNaturalist
Blue LinckiaLinckia laevigataObserved near here · iNaturalist
Tawny Hermit CrabCoenobita rugosusObserved near here · iNaturalist
Indo-Pacific Sergeant MajorAbudefduf vaigiensisObserved 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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