Closed national park · liveaboard-only · Thailand's best dive sites
1 curated expedition visiting Similan Islands — fixed dates, small groups, vetted partner operators, zero agency fee.
Different dates or a private group? See all expeditions · plan a custom Similan Islands trip on WhatsApp →
18 canonical courses bookable through iDive partner schools · all SSI+PADI certified · zero agency fee.
Peak months mean clearest visibility, best marine sightings and stable weather. Shoulder is still good. Off-season often has rough conditions or monsoon.
Marine life you can spot diving here. Click any creature to find trips that target sightings of it.
Similan Islands close to non-park boats — liveaboards from Khao Lak are the way to dive these legendary granite-boulder sites.
What pulls divers to Similan Islands: Closed national park · liveaboard-only · Thailand's best dive sites.
Diving conditions are typically moderate currents, with water temperatures around 27-30°C.
It's a particularly strong fit for liveaboard lovers, bucket list, photographers.
Tell us your dates, certification level and what you want to see — we'll match you to the right trip in Similan Islands and lock the dates in minutes.
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