Similan Islands Early Bird Tour Essentials
The similan islands early bird tour (ทัวร์หมู่เกาะสิมิลัน) leaves Tap Lamu Pier ahead of the main fleet, crossing the Andaman Sea by speedboat to the granite-fringed reefs of Mu Ko Similan National Park. This Khao Lak speedboat snorkelling trip covers two or three stops over hard coral gardens where reef sharks, parrotfish and the occasional manta ray pass through, plus beach time on Ko Miang and Ko Similan. Because the marine park closes for the monsoon, similan islands early bird tour tickets cover only the mid-October to mid-May season, with the 2026–27 reopening set for around 15 October 2026.
Similan comes from sembilan, the Malay word for nine, and for its first sixteen years the park held exactly that many islands. Koh Bon and Koh Tachai were folded into the boundary in 1998, and the count rose to eleven.
Rangers dispensed with names and used numbers instead: Island 4, Koh Miang, for the headquarters; Island 8, Koh Similan, for the balanced granite block locals call Sail Rock. The archipelago sits roughly 60 kilometres off the Phang-nga coast, and most travellers reach it on a Similan Islands Early Bird Tour from Phuket and Khao Lak, crossing the Andaman Sea while the water is still flat.
The geology predates the park by some seventy million years. These islands are the exposed crowns of a granite pluton, weathered into rounded blocks the size of houses. On the western shores those blocks continue underwater, stacking into swim-throughs and canyons that fall past thirty metres. The eastern shelves are gentler: hard coral gardens, staghorn thickets, sand flats holding visibility of twenty to thirty metres through the dry months. Hin Pousar — Elephant Head Rock — breaks the surface between Islands 7 and 8 as three grey pinnacles. Mu Ko Similan National Park was gazetted on 1 September 1982, Thailand's forty-third.
Protection has tightened since. Islands 1, 2 and 3 stay closed to visitors, held back for hawksbill and green turtle nesting. In October 2018 the park withdrew all overnight accommodation; the bungalows and tent pitches shut. So the question of whether you can stay on Similan Islands has a single answer: you cannot, and every arrival is a day arrival. Daily visitor caps followed. A full-day Similan Islands Early Bird Tour tour by speed catamaran now covers water that once demanded a liveaboard berth.
Season governs access more than anything else, and travellers asking whether the Similan Islands are open should check the park's published calendar before committing to dates; when the park is receiving visitors, hours run 08:00–16:30. Similan Islands Early Bird Tour tickets carry the conservation fee of 500 THB per person for foreign adults, collected at Mu Ko Similan National Park, Lam Kaen, Thai Mueang District, Phang-nga. Beneath the logistics, the reef keeps its own calendar: manta rays along the Koh Bon ridge, whale sharks off Koh Tachai in the shoulder weeks, and the gorgonian sea fans that give the deeper boulder fields their colour.
13 hr
