Koh Ngam Noi / Vietnamese Island
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
Koh Ngam Noi / Vietnamese Island is a small island dive site in the Chumphon area of Thailand. It lies 400 metres south of Koh Ngam Yai and is about a third of the size of that neighbouring island.
The best diving is at the southern tip, where a naturally formed swim-through runs through the rock. Most divers stay close to the rocks, which makes the site a good place to look for different types of nudibranch.
Schools of snapper, jackfish and yellowtail barracuda pass by, and blue-spotted stingrays can often be seen on the sand. The best season for diving here runs from February to October.
Marine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
NudibranchNudibranchReported here · unconfirmed
SnapperSnapperReported here · unconfirmed
BarracudaBarracudaReported here · unconfirmed
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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