thailand-divers.com · Independent Guide
Visibility and current baseline for ordinary conditions.
Dive Spot Guide•
Koh Racha Yai
Koh Racha Yai is Phuket's easy, clear-water training island.
Use Koh Racha Yai for calm bay dives, beginner training, and fast Phuket day trips; some outer reef and wreck profiles run deeper.
About Koh Racha Yai
Koh Racha Yai is one of Phuket's easiest year-round dive islands, reached by day boats from Chalong Bay. The sheltered bays and sloping hard-coral reefs make it a common training and check-dive destination, while deeper reef and wreck profiles give returning divers more variety. Expect clear water on good days, busy boat traffic, and a seasonal coast split between calmer sheltered bays and more exposed profiles.
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Research Estimate At Koh Racha Yai
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 18m
AccessSimple entry
CoralHealthy coral
Aquatic LifeGreat variety
FacilitiesBasic facilities
Crowd / PopularityQuite busy
CurrentLight current
Where Is Koh Racha Yai?
This spotNearby spotsExplore nearby spots on the map
Community sourced coordinates.
Koh Racha Yai Planning Details
Depth range, seasonality, and planning context.
Reported Depth
5m - 40m
Depth Note
Shallow bay dives start around 5-10m; reef profiles commonly run to 25m, with selected wrecks reaching about 40m.
Best Season
Eastern sites: May–October (rainy season) for clearest water; Western sites: November–April.
Typical Conditions
Sheltered bay dives are usually calm and clear; outer profiles can bring moderate current and more boat traffic.
Safety & Access At Koh Racha Yai
Site conditions, restrictions, and access requirements.
Site Conditions
Boat trafficSharp coral
Safety Notes
Watch boat traffic on the busy easy sites, keep clear of coral heads, and treat deeper or wreck profiles as a step up from the shallow training bays.
Access Restrictions
Boat access is the normal route; shore access is not the typical way to dive the island.
Local Intel For Koh Racha Yai
Community notes to help plan your visit.
Scuba Diving
Best for easy bay dives, training, and check-dives; some reef and wreck sites suit more experienced divers.
Freediving
Only the shallowest sheltered bays are a fit; the island is mainly set up for scuba boat trips.
Snorkeling
Calm bays can work for snorkeling, but dive-boat traffic and mixed depths make it better as a scuba day than a snorkel-only stop.
Wildlife at Koh Racha Yai
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Koh Racha Yai
Community dive logs and visit reports for this site.
Dive Spot Log Averages At Koh Racha Yai
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility18m
Activity
No dive activity logged yet.
