A full‑day snorkel cruise from Khao Lak to the Similan Islands that combines guided reef swims, a beach picnic on Koh Similan and short hikes to dramatic granite viewpoints. Ideal for swimmers and anyone wanting an efficient introduction to one of Thailand’s top marine areas.
More ways to explore the area's outdoor wonders
The boat slips free from Thap Lamu as dawn light layers the Andaman; spray cools your face and the horizon pushes the island silhouettes forward. Within 90 minutes the water changes from deep blue to turquoise bands, and the captain eases alongside Koh Miang where white sand meets reef. You’ll anchor, kit up, and let the current invite you into the shallow gardens of coral.
Difficulty
moderate
Duration
8–9 hours
Fitness Level
Suitable for most people with basic mobility; comfortable with short swims and getting on/off a boat.
Wildlife
History
The Similan Islands were declared a national park in 1982 to protect rich marine habitats and granite island formations important to local fisheries and tourism.
Conservation
Visitor numbers are managed seasonally and park fees support reef patrols; use reef‑safe products and avoid touching coral to minimize impact.
Reserve your spot on the Khao Lak: Wow Andaman Snorkeling Trip to Similan Islands today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Book in park season
The Similan National Park is open roughly 15 Oct–15 May; trips outside this window are not available or may be rerouted.
Use reef‑safe sunscreen
Apply biodegradable sunscreen before boarding to reduce harm to corals and avoid applying while in the water.
Bring motion‑sickness meds
Crossing can be choppy; take prevention the night before or at least 30 minutes prior to departure if you get seasick.
Secure passport copy
Operators require passport ID photos for marine department registration—keep a digital and physical copy handy.
Mask & snorkel
Provided by the operator but many travelers prefer bringing a well‑fitting personal set for comfort and a better seal.
Reef‑safe sunscreen
Protects your skin and the coral; apply before boarding and reapply after exiting the water.
summer
Light water shoes
Helpful for beach entry/exit and walking rocky shorelines at some snorkel points.
Dry pouch or waterproof phone case
Keeps phone, passport copy and cash dry while on the boat and during short hikes.