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North Ridge-specific terrain, coral, current, and wildlife.
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Boat-only Koh Bon ridge dive with a sloping reef, stronger current sensitivity, and a route best handled with a guide.
About Koh Bon, North Ridge
Koh Bon, North Ridge is the exposed north-side ridge on Koh Bon, with a sloping reef that rolls into open water and a route that can link toward the wider Koh Bon complex when conditions allow. It is the more current-sensitive side of the island, valued for its coral color, rock crevices, and the chance of big-fish encounters on a guided reef dive. Plan it as a boat-led ridge dive rather than a relaxed bay swim.
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Research Estimate At Koh Bon, North Ridge
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 20m
AccessModerate entry effort
CoralSome damage
Aquatic LifeGreat variety
FacilitiesLimited facilities
Crowd / PopularityQuite busy
CurrentModerate current
SurgeModerate surge
Where Is Koh Bon, North Ridge?
This spotNearby spotsExplore nearby spots on the map
Community sourced coordinates.
Koh Bon, North Ridge Planning Details
Depth range, seasonality, and planning context.
Reported Depth
5m - 35m
Depth Note
The ridge starts from a sloping reef and reaches rock around 33-35m, with deeper water beyond the main line and shallower reef sections inboard.
Best Season
Mid-October to late April
Typical Conditions
Currents are usually weak to moderate.
Safety & Access At Koh Bon, North Ridge
Hazards, restrictions, and access requirements.
Key Hazards
Strong currentSurge
Safety Notes
Stay close to the guide, watch the return leg to the reef, and do not assume the north ridge will feel as calm as the sheltered bay.
Access Restrictions
Boat access only inside Mu Ko Similan National Park, with seasonal park opening dates controlling when the site can be dived.
Legal Notes
Mu Ko Similan National Park is closed annually from 16 May to 14 October.
Local Intel For Koh Bon, North Ridge
Community notes to help plan your visit.
Scuba Diving
Shallow reef dive with a swim route from the North Ridge over the West Ridge into the bay.
Freediving
Not a freedive-first site. The ridge drops away quickly and the current-sensitive profile is better suited to scuba with a guide.
Snorkeling
Not a strong snorkel target. The exposed ridge is better left to scuba, while the sheltered Koh Bon bay is the calmer option.
Wildlife at Koh Bon, North Ridge
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Koh Bon, North Ridge
Community dive logs and visit reports for this site.
Dive Spot Log Averages At Koh Bon, North Ridge
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility20m
Activity
No dive activity logged yet.
