Dive directory entry with shore access, current, depth range, and marine life.
Koh Chi reef in the Surins for experienced divers.
Koh Chi reef in the Surins for experienced divers.
Koh Chi is the northernmost Surin Island reef, with a sloping profile, granite boulders, and healthy coral that rewards careful route-finding. It is best known for pelagics and reef fish, but the site can also offer shallow sections for snorkeling when conditions are calm. Plan the day around the park season and expect the current to shape the dive.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
10m - 25m
Depth Note
Main dive range sits around 10-25 m on a sloping reef with granite boulders.
Best Season
November to April
Typical Conditions
Sloping reef with granite boulders and healthy coral; current can be strong, and the site can become a drift dive when conditions line up.
Site conditions, restrictions, and access requirements.
Site Conditions
Safety Notes
Currents can be strong and unpredictable; suited to experienced divers.
Access Restrictions
Surin National Park access is seasonal and controlled, so plan the trip inside the opening window.
Legal Notes
Use an accredited operator and confirm park access before travel.
Community notes to help plan your visit.
Scuba Diving
Sloping reef with granite boulders, healthy coral, and pelagic fish.
Snorkeling
Shallow reef sections can work for snorkeling on calmer days.
Community dive logs and visit reports for this site.
Average conditions based on logged dives & visits.
Planning answers for access, conditions, timing, and site logistics.
Last Updated
Research Sources
Dive directory entry with shore access, current, depth range, and marine life.
Independent guide with visibility and depth figures for Koh Chi.
Operator page with seasonal access, exposure, and depth guidance for Koh Chi.
Operator guide with boat access, visibility, snorkeler suitability, and seasonal context.
Official tourism source for the Surin National Park seasonal window.
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