Is a Similan Islands Day Trip Worth It?

A Similan day trip is worth it if you want snorkelling stops in a national park, the Sail Rock view on Island 8 and a beach lunch, and you can give it a whole day: 10 to 13 hours on Siam Adventure World’s Similan Islands Early-Bird Tour From Phuket and Khao Lak!, from US$121 a person (checked November 2026) with the park fee included. It is a harder sell from Phuket with a 4:00 AM pickup, with small children, or for anyone with a bad back.

The calendar above is the early-bird day, with 4,453 reviews and a rating of 4.7 out of 5 (checked November 2026).

The short answer

Go if you are staying in Khao Lak, or if the Similans are one of the reasons you came to this coast: nobody stays overnight on the islands, so a day trip is the usual way to see them, the park is open only half the year, and a well-run day covers the viewpoint, the snorkelling and a beach lunch. Think twice if you are in Phuket for a few days with no wish to get up at 4:00 AM, if you get seasick, or if someone in your group has back, heart or breathing problems, because the day is long and the crossing is open sea.

What the day costs in hours

From Phuket, the early-bird day starts with a pickup from 4:00 AM and a van ride of 1 hour 15 minutes to 2 hours 15 minutes to the pier near Khao Lak. The boat leaves at 7:00 AM and takes 1 hour 20 minutes each way. You get the Sail Rock climb on Island 8, three snorkel stops of about 40 minutes and about two hours on Island 4 for lunch and a walk, then the same journey back, slower in evening traffic. From Khao Lak the pickup is an hour later and the van ride is 10 minutes to an hour. By road, Thap Lamu pier is 71 km from Phuket airport and 100 km from Patong, but 7.6 km from Khao Lak.

What it costs in money

The early-bird day is from US$121 a person (checked November 2026) with transfers, breakfast, lunch, gear and the park fees in the price; towels and tips are extra. Cheaper trips exist, but several leave out the park fee, which the Department of National Parks sets at 500 baht for a foreign adult and 250 for a child (checked November 2026). Delight Tours and Travels' day is a lower price with the fee included, from US$89 on promotion, usually US$148 (checked November 2026). The national park fee sorts every carded trip by whether it includes it.

The crowds

You will not have the islands to yourself. On the opening day of the 2026-27 season, 15 October 2026, the park counted 1,409 visitors, 1,359 of them on day trips (DNP). The early-bird day’s answer is its 7:00 AM boat, meant to put you among the first at the islands, with Island 8 as the first landing. Trips run their stops in different orders: Northern All Star Co.,Ltd.'s trip reaches Island 4 at 10:20 and the Sailing Rock viewpoint on Island 8 at 14:00.

Check dates for the 7:00 AM boat

When to skip it

Skip it from 16 May to 14 October in any year: the park closes every year in those months and no trip runs. Skip it, too, if anyone in your group is pregnant, uses a wheelchair or has back, heart or respiratory problems: the early-bird day is not suitable for them, and several other trips add people over 70, non-swimmers or people prone to seasickness to that list. And if all you want is a beach and an easy swim, a shorter boat day closer to your hotel will give you more of the day for less of the drive.

If it is worth it to you, pick your day

Prices, ratings and review counts from the GetYourGuide listings (checked November 2026). Operators price by date and season, so treat the figures as the shape of the market, not a quote.