About Similan Islands
The Similan Islands, located in the Andaman Sea northwest of Phuket, are one of Thailand’s most famous marine national parks. Known for crystal-clear water, bright white sand, granite boulders, and world-class snorkelling and diving, the Similans attract travellers looking for vibrant coral reefs and some of the best underwater visibility in the country.
While Simba Sea Trips does not operate tours to the Similan Islands, we provide this information to help guests understand the full range of marine destinations in southern Thailand and choose the right trip for their plans.
How to Get to the Similan Islands
The Similans are best accessed from Khao Lak, which is the closest mainland point to the islands. From Khao Lak, high-speed boats take approximately 60–90 minutes to reach the national park. Most travellers stay one night in Khao Lak or book a morning transfer from Phuket before joining a tour.
Tours typically operate November to April, as the marine park is closed during the monsoon season for safety and reef protection.
What You Can See at the Similan Islands
The Similans are considered one of the top snorkelling and diving areas in Thailand due to their clear water, healthy coral, and large marine species. Common sightings include:
-
parrotfish, butterflyfish, angelfish
-
giant trevally and schools of fusiliers
-
blue-spotted rays and cuttlefish
-
green and hawksbill sea turtles
-
occasional reef sharks
-
dramatic granite boulder reefs creating tunnels and swim-throughs
The islands above water are just as striking, with smooth granite formations, bright white beaches, and panoramic viewpoints like the famous Sail Rock at Similan Island No. 8.
Simba Sea Trips & the Similan Islands
Although Simba Sea Trips focuses on the Phi Phi Islands, Phang Nga Bay, Krabi, and the local islands near Phuket, we recognise that some travellers may be planning a longer stay in southern Thailand and want to explore beyond our routes.
If you’re looking for the clearest water and the best coral visibility near Phuket, the Similan Islands — accessed from Khao Lak — are an excellent option to pair with a Simba tour on a different day.
No valid media available.
Best Time to Visit
The Similan Islands are open only from October to May, with the best weather and visibility typically from November to April.
Getting There
The Similans are most easily reached from Khao Lak, with high-speed boats departing daily during the open season.
Simba Sea Trips does not operate tours here, but we encourage guests to depart from Khao Lak for the fastest access.
Experience some of the clearest water in Thailand
The Similans are famous for exceptional visibility, bright turquoise bays, and white-sand beaches.
Snorkel vibrant coral reefs full of marine life
Common sightings include parrotfish, angelfish, butterflyfish, rays, and sea turtles.
Explore dramatic granite rock formations
Smooth boulders, underwater swim-throughs, and iconic viewpoints define the Similan landscape.
A top destination for diving enthusiasts
The area is considered one of Thailand’s best diving regions, with deep reefs and rich marine ecosystems.
What Our Customers Say
Excellent
4.9 based on 4232 reviews
100% worth it
We have done this tour twice now. Once in 2024 and again in 2026 - both times were excellent. I would recommend it to everyone. The early wake up is 100% worth it. This time we took my parents (in there late 70s) who had a great time also. The staff were very helpful.
Brilliant day trip
Excellent day despite the early start but this meant no queues or big groups we missed all that. We loved the trip Noinoi and his staff were brilliant and the lunch was fabulous too. James Bond Island and beyond so worth it and great value for money
Fantastic excursion 👌
It may have seemed an early start, but really was worth every minute. Everything was seamless from collection at hotel to drop off on return. It was really quite special setting off in the dark and watching the sunrise as we sped through the Andaman. Getting to Maya Bay before the crowds was ideal, our guide Josef and his colleagues were fun, friendly and professional. Stop offs and snorkelling were great. The snacks, breakfast and Thai meal at the end of the trip were all top notch. Highly recommend this company and would use again when visiting siting Thailand 👌
FAQ
Frequently Asked Questions
Subscribe for latest update about Travelling
Subscribe to receive updates about new tours, special offers, and travel tips for Thailand.