underwaterkingdoms.com · Operator
North Ridge-specific terrain, coral, current, and wildlife.
Dive Spot Guide•
Koh Bon, North Ridge
Exposed ridge dive on Koh Bon.
ScubaBoat EntryIntermediate
Reef
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
Coral HealthSome damage
Marine LifeGreat variety
FacilitiesLimited facilities
CrowdedQuite busy
Current StrengthModerate current
Surge StrengthModerate surge
Where Is Koh Bon, North Ridge?
This spotNearby spots
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
Shallow reef dive with a swim route from the North Ridge over the West Ridge into the bay.
Freedive
Not a freedive-first site. The ridge drops away quickly and the current-sensitive profile is better suited to scuba with a guide.
Snorkel
Not a strong snorkel target. The exposed ridge is better left to scuba, while the sheltered Koh Bon bay is the calmer option.
Koh Bon, North Ridge Dive Conditions Planner
Use the planner to scan this week, inspect today in local time, and understand how exposure shapes conditions at Koh Bon, North Ridge.
Current Snapshot
No data
🌥️Variable
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Surface / Entry
Wind No data · Tide No data
Sea State
Swell No data · Period unavailable
Visibility Outlook
Rain chance No data
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Exposure Profile at Koh Bon, North Ridge
Directional shelter context for incoming swell.
Exposure Note
Hourly forecast data is not available yet.
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.
No Dive Logs Yet
Be the first to log a dive at this spot and share your experience!
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.
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Koh Bon, North Ridge Guide - Frequently Asked Questions
Planning answers for access, conditions, timing, and site logistics.
Koh Bon, North Ridge Guide - Sources and Updates
Last Updated
Research Sources
www.bluewaterdivetravel.com · Travel
Koh Bon visibility, current, surge, and popularity context.
www.tatnews.org · Official
Mu Ko Similan National Park seasonal closure notice.
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