Thai Ocean Academy updated Spot verified, Photos.
Mar 21, 2026Dive Spot Guide•
Koh Sak
Sheltered near-island reef with mixed habitat.
Spot Verified
FreediveScubaSnorkelBoat EntryBeginner
Artificial ReefMuckReef
Local operator required
Boat or speedboat access and limited anchorage make an operator the practical way to visit.
A Pattaya boat-day reef with shallow coral, sandy bays, and a deeper edge; calmer wind windows are easiest.
About Koh Sak
Koh Sak is a protected Pattaya near-island reef with shallow coral, sandy bays, and a deeper reef edge that keeps the dive easy to read once you are in the water. The site suits beginners, snorkelers, and fun divers who want a compact route, mixed habitat, and a calm-conditions boat day rather than a long or technical offshore run.
Verified Spot Details
Research Estimate At Koh Sak
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 10m
AccessSimple entry
Coral HealthHealthy coral
Marine LifeGreat variety
FacilitiesLimited facilities
CrowdedModerate
Current StrengthLight current
Surge StrengthLight surge
Where Is Koh Sak?
This spotNearby spots
Community sourced coordinates.
Koh Sak Planning Details
Depth range, seasonality, and planning context.
Reported Depth
3m - 20m
Depth Note
Shallow hard coral with a deeper sandy area leading to muck
Best Season
Year-round, with calmer wind windows most comfortable.
Typical Conditions
Sheltered near-island reef with calm bays, clear water, and light current; the south side can get busier with tourist boats when the wind comes from the north.
Safety & Access At Koh Sak
Hazards, restrictions, and access requirements.
Key Hazards
Boat trafficSharp coral
Safety Notes
Watch for tour boats and jet skis at the surface, keep buoyancy clean over the coral rim, and avoid brushing the reef on entries and exits.
Access Restrictions
No ferry service; access is by boat or speedboat, and fringing coral leaves only select anchoring and landing spots.
Local Intel For Koh Sak
Community notes to help plan your visit.
Scuba
Suitable for open water divers as well as fun dives, with shallow reef and deeper sand areas to explore. There are 3 main dive sites around the island, 1. Koh Sak East: reef with a sandy bottom perfect for students 2. Koh Sak West: reef with a few turtles 3. Submarine: round the corner on the Koh Larn facing side, nice reef wall
Freedive
Freediving is best kept to the sheltered shallow bays; the site is primarily a mixed reef stop for snorkel and scuba.
Snorkel
Snorkeling works best in the calm bays and along the shallow coral edge when the water stays clear.
Koh Sak Dive Conditions Planner
Use the planner to scan this week, inspect today in local time, and understand how exposure shapes conditions at Koh Sak.
Current Snapshot
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🌥️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
Wind
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Swell
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Exposure Profile at Koh Sak
Directional shelter context for incoming swell.
Exposure Note
Hourly forecast data is not available yet.
Wildlife at Koh Sak
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Koh Sak
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 Sak
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility10m
Activity
No dive activity logged yet.
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Koh Sak Guide - Frequently Asked Questions
Planning answers for access, conditions, timing, and site logistics.
Koh Sak Guide - Sources and Updates
Last Updated
Recent community updates
Thai Ocean Academy updated Photos.
Mar 21, 2026Thai Ocean Academy updated Entry type, Dive types, Tags +6 more.
Mar 21, 2026Research Sources
online-pattaya.com · Travel
Horseshoe-shaped island, protected water, no strong current, no ferries, and limited infrastructure.
www.oceanmarinajomtien.com · Tourism
Pattaya proximity, anchorages, limited facilities, and tourist-boat traffic.
www.pattaya-scuba-adventures.com · Marine Life
Explicitly names Koh Sak as bamboo-shark habitat on the deep reef.
www.pattaya-scuba-adventures.com · Marine Life
Names Koh Sak among Pattaya sites where lionfish can be found.
www.pattaya-scuba-adventures.com · Operator
Sheltered near-island reef, mixed habitat, visibility, and marine-life overview.
