Khao Lak, Thailand
Explore 11 granite islands in the Andaman Sea. Full-day tours depart from Khao Lak and Phuket between October and May.
4.5 from 85 traveller reviews on Viator
Tickets & tours
Compare speedboats and catamarans departing from Khao Lak or Phuket.
Most bookedTake a snorkel tour to the Similan Islands with the friendly and professional crew and experience the ocean wonders and colourful marine life in the heaven on earth. The...
Top ratedThis Similan Islands day tour is operated by a luxury double-deck catamaran, offering more space, better stability, and a more comfortable ride compared to standard...
Best valueVisit the crown jewel of the Andaman Sea, Similan Island. Relax on white sand beaches. Snorkeling in crystal-clear seawater. Walk to the breathtaking viewpoint. Hotel...
Explore
Key islands and snorkeling spots on the typical tour route.
2 spotsKoh SimilanThe largest island and home to the famous Sailing Rock.Explore Photo: tour listing on Viator
2 spotsKoh Miang BeachesA central island with two main beaches and the park ranger station.Explore Photo: tour listing on Viator
2 spotsTop Snorkeling SpotsUnderwater sites at Koh Ba Ngu and Koh Payu on Similan day trips.Explore Photo: tour listing on Viator
Single-use plastics are banned in the marine park.
Bring a reusable water bottle and reef-safe sunscreen.
Plan your visit
Speedboats take 70 to 90 minutes from Khao Lak.
The park is only open from 15 October to 15 May.
Tours leave from Thap Lamu Pier in Khao Lak. Phuket pickups start early.
Expect to pay 2,800 to 4,500 THB per adult for a guided tour.
The Similan Islands are an archipelago in the Andaman Sea. They are known for clear turquoise waters, coral reefs, and white powder-sand beaches. You can only visit them on day trips, as overnight stays are prohibited.
Most tours leave from Thap Lamu Pier in Khao Lak. If you stay in Phuket, expect up to two hours of extra driving each way. Read our guide on Phuket vs Khao Lak for details on the commute.
Park rules are strict. You must use reef-safe sunscreen. The park limits daily visitors to 3,850 people. Learn what to bring with our Packing List.
We distinguish between standard speedboats and larger catamarans.
We highlight whether a tour originates in Khao Lak or Phuket.
We check if the 500 THB national park fee is included in the base price.
From Viator
85 reviews of the wow andaman speedboat tour on Viator
Fabulous day out on the catamaran to the Similian Islands with Puu and his Wow Andaman team! A little windy, so had to change itinerary slightly but still brilliant! Well looked after and some spectacular beaches and wildlife!!
The trip was organised very well. I got to see beautiful sights, both above and below the water. It's unbelievable that visibility was crystal clear at such depths.
I want to thank all the crew for their hospitality and kindness, billie was very kind and articulate . Thank you very much
Our tour guide BB and her crew were fantastic!!! Cannot rate them highly enough. BB went out of her way to make sure everything was 100% perfect for a fantastic day to remember! Delicious food and plenty of it, lots of fun extras to use in the water, super helpful and took lots of photos of us when asked… Thank you BB and 7 plus team!!! 10/10 🌟🌟🌟🌟
Whew, I thought I was gonna die! I was so sick. The waves were out of control! The crew were wonderful taking care of all of us that were sick. Those guys earned every baht!! The snorkeling was amazing. I did not like any of the pictures that were taken because you never had any idea you were getting photographed.
Absolutely worth the money, even if you left early in the morning and came back a 6pm to the hotel, the day was too short. Plenty of time at each stop to enjoy the beach, the view and the sealife. I cam highly recommend this day trip.
The scenery was beautiful, the water was crystal clear, and the snorkeling was one of the highlights of the day. Everything was well organized from hotel pickup to the boat trip. The crew were friendly and helpful, and there were drinks and refreshments available during the journey. Lunch in the National Park was simple but tasty. A long day, but absolutely worth it. One of the best trips we did from Phuket.
We went as a couple and absolutely loved it.The snorkeling was incredible, super clear water and lots of marine life. Everything was well organized, the crew was friendly, and the whole trip felt easy and fun
We were with the guides Ken and Yin who were fantastic. Both informative, clear and fun
Travel tips
Tour PricesSee exactly how much a Similan Islands trip costs.Read 
Phuket vs Khao LakCompare travel times from Phuket and Khao Lak for Similan Islands trips.Read 
Best Time to VisitFind out when the park is open and the best months to go.Read 
Kids & FamiliesFind out if the bumpy Similan speedboat trip is right for your child.Read 
Packing ListWhat to bring on your Similan Islands speedboat day trip.Read 
Similan vs SurinCompare the Similan and Surin islands to choose your ideal day trip.Read Yes, they offer crystal-clear turquoise waters and pristine coral reefs. They are widely considered one of the best snorkeling destinations in Thailand.
A group tour usually costs between 2,800 and 4,500 THB per adult from Khao Lak. Prices depend on the boat type and operator.
No. Overnight stays on the islands have been strictly prohibited since 2018. Only offshore liveaboard diving boats are allowed overnight.
No. The national park is strictly closed to all visitors from 16 May to 14 October annually.
The crossing takes 70 to 90 minutes by speedboat from Thap Lamu Pier in Khao Lak. Catamarans may take slightly longer.
Foreign adults pay 500 THB and foreign children pay 250 THB. Most tours bundle this fee into the ticket price.
Secure your spot before the daily visitor cap is reached.
