Short speedboat hops from Phuket take you to three compact islands with shallow coral gardens and white sand beaches. Ideal for families and beginner snorkelers, the Khai Islands offer clear water, on-board refreshments and guided snorkeling on half- or full-day departures.
More ways to explore the area's outdoor wonders
The engine thumps and the harbor spray lifts as the speedboat peels away from Phuket’s marina toward three small, sun-bright islets. Khai Nok, Khai Nai and Khai Nui sit like stacked plates in the Andaman Sea, beaches fringing shallow reefs where schooling fish and waving corals draw a steady line of snorkel masks.
Difficulty
easy
Duration
4–9 hours
Fitness Level
Suitable for most fitness levels; you should be comfortable swimming short distances and treading water with a life jacket.
Wildlife
History
The Khai islets were traditional local fishing stops rather than populated islands; they became popular tourist sites after speedboat day trips from Phuket increased in the 2000s.
Conservation
Stick to marked swimming areas, avoid touching coral, and use reef‑safe sunscreen; operators often limit numbers and provide life jackets to reduce reef damage.
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Bring reef‑safe sunscreen
Apply a zinc-based sunscreen before boarding to protect reefs and reduce the need to reapply on the water, where it can wash off.
Time your trip for calmer seas
Book morning departures in the dry season (Nov–Apr) for the best visibility and gentler water.
Pack a dry bag
A small waterproof pouch keeps your phone, wallet and dry clothes safe on the return trip.
Use your own snorkel mask if possible
Although masks are provided, a personal well-fitting mask reduces fogging and improves comfort underwater.
Reef‑safe sunscreen
Protects skin and avoids harming coral ecosystems in warm tropical waters.
summer
Snorkel mask (personal)
A well‑fitting mask reduces fog and makes snorkeling more enjoyable than shared rental masks.
Water shoes
Protect feet on coral flats and slippery steps when boarding smaller boats or walking rocks.
summer
Small dry bag
Keeps belongings dry during boat transfers and while on the beach.