Koh Adang's diving centres on reef structures scattered across nearby islets and submerged pinnacles, all reached by boat. Sites range from shallow beginner-friendly reefs to deeper walls and drift dives at places like Adang Corner and Koh Pung, where currents demand more experience. Pinnacles such as Sail Rock and Zero Rock reward those comfortable in open water. Giant Moray, Sea Krait, Titan Triggerfish, and Bluefin Trevally are consistently sighted, alongside a rich variety of butterflyfish and parrotfish.
Monthly water temperature across Koh Adang's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water temperatures stay warm throughout the year with little seasonal swing, making thermal comfort a constant. The histogram points to March, November, and December as the strongest months, likely reflecting calmer seas and better visibility. During mid-year the conditions are softer, which may suit newer divers despite the lower peak rating.
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Water temperature around Koh Adang ranges from about 29°C in January to 31°C in April, based on satellite sea-temperature data for its dive sites.
4 more sites to explore
With water around 29–31°C, a rash guard or 3mm shorty works in Koh Adang year-round.
Fin maps 15 sites in Koh Adang (15 scuba diving sites and 3 snorkelling spots, with some suited to both).
Sightings here are varied and well-documented. Giant Moray and Sea Krait are observed consistently across the sites, while Titan Triggerfish, Bluefin Trevally, and multiple species of butterflyfish are very common. Whale Shark and Lionfish appear among the signature species, though their encounters are less predictable.
Several sites cater specifically to newer divers. Ao Taloo Lancha, Koh Yang East, and Zero Rock are all rated beginner level, offering relatively shallow maximum depths on straightforward reef structures. Drift sites such as Adang Corner and Koh Bitsi, and the deeper pinnacle at Sail Rock, are better left to intermediate divers with current experience.
Every site listed at Koh Adang is accessed by boat; there are no shore entries in the data. Sites are spread across nearby islets including Koh Yang, Koh Taru, Koh Bitsi, and Koh Pung, so a dive trip typically involves short boat transfers between locations.
The site mix is truly diverse for a single area. Divers can explore coral reefs, vertical walls, submerged pinnacles, drift dives, and a muck-and-reef combination at the Waterfall site. This variety means different dives suit different interests, from slow macro-focused muck dives to current-driven reef passes.
