Similan Islands from Phuket: Day Trip vs Liveaboard (2026)
The Similans reopen November each year and consistently rank among Asia's top dive sites. Here's how to visit — and which trip is right for you.
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Season alert
The Similan Islands National Park is only open 15 October to 15 May. Book November–March for the best conditions; February is peak visibility (30m+).
Day trip from Phuket
- 1.5-hour drive to Khao Lak pier + 1-hour speedboat.
- Two snorkel stops, lunch on Island 4 (Koh Miang), viewpoint hike on Island 8 (Koh Similan) with the famous Sail Rock.
- Long day (5:30am pickup, 7pm return) but incredible.
Liveaboard — the serious upgrade
2 to 4 nights on a boat, 3–4 dives per day, including Koh Bon manta rays and Richelieu Rock (Thailand''s #1 dive site, whale sharks Feb–April).
Best operators leave from Khao Lak or Tap Lamu Pier. Budget from ฿22,000 for 3 days / 3 nights.
Snorkelling vs diving
- Non-divers get 80% of the magic — visibility is often 20m even from the surface.
- Kids 8+ handle the speedboat fine; under 8, choose a big-boat tour instead.
What you''ll see
- Reef sharks (harmless), turtles, giant clams.
- Schooling barracuda and trevally.
- Whale sharks and manta rays Feb–April.
Book smart
- National park fee ฿500 for foreigners — check it''s included.
- No overnight camping on the Similans since 2018.
- Reef-safe sunscreen only — enforced at the pier.
Talk to us — we book both day trips and full liveaboards with vetted operators.
Ready to make it happen?
Talk to a Thailand specialist — we usually reply within 30 minutes.
