Koh Samui Scuba Diving & Snorkeling Tours

Compare and book top-rated diving and snorkeling tours around Koh Samui — from beginner-friendly reef snorkels to certified dive days at Sail Rock and Koh Tao.

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Handpicked Top-Rated Tours
Every tour listed on Samui Scuba is selected based on reviews, operator reputation, and value. We cut through the noise so you book with confidence.
All Experience Levels Welcome
From first-time snorkelers to experienced certified divers, there's a tour here for every comfort level — including beginner-friendly options with all equipment included.
Free Cancellation Available
Most tours offer free cancellation, so you can book your Koh Samui dive or snorkel adventure ahead of time without the risk.

Top Dive & Snorkel Destinations Near Koh Samui

Koh Samui sits at the doorstep of some of the Gulf of Thailand's best underwater destinations. Snorkel the shallow coral gardens of Koh Tan and Pig Island, explore the island wilderness of Ang Thong Marine Park, or venture further to Koh Tao and Sail Rock — where certified divers encounter whale sharks, sea turtles, and dramatic underwater pinnacles. Whatever your experience level, there's a tour that gets you there.

Ang Thong Marine Park

Chumphon Pinnacle

Koh Tan & Koh Madsum

Koh Tao

Sail Rock

Shark Island

Koh Samui Tours — Scuba Diving & Snorkeling

Browse top-rated tours from certified local operators. Compare itineraries, prices, and reviews to find the right trip for your group.

Koh Tan and Koh Madsum Island Hopping Tour from Koh Samui – Coral Reef Snorkeling and Pig Island Beach Adventure with Lunch

Koh Tan & Koh Madsum

Free Cancellation

5 Hours (approx.)

Two snorkelers floating in crystal clear water at Koh Tan island with lush green coastline Thailand

Sail Rock Scuba Diving Tour from Koh Samui – Premium 2-Dive Day Trip to Thailand’s Most Famous Dive Site for Certified Divers

Sail Rock

Free Cancellation

7 hours (approx)

Whale shark with remora fish at Sail Rock dive site Gulf of Thailand Koh Samui scuba diving tour

Koh Samui Snorkeling and Kayaking Tour to Koh Tan and Koh Madsum – Full-Day Speedboat Adventure with Giant Clams, Coral Reefs, and Beach Relaxation

Koh Tan & Koh Madsum

Free Cancellation

4 hours (approx.)

Snorkelers exploring vibrant coral reef with colorful tropical fish at Koh Tan Coral Island Thailand

Discover Scuba Diving Koh Samui – 2 Dive Beginner Experience at Koh Tao with Hotel Transfer and Lunch

Koh Tao

Free Cancellation

1 Day (approx.)

Beginner scuba diver exploring coral reef with tropical fish during discover diving tour in Koh Tao Thailand

Koh Tao and Koh Nang Yuan Snorkeling Tour by Speedboat from Koh Samui – Full-Day Island Adventure with Japanese Garden Coral Reefs

Koh Tao

Free Cancellation

9 hours (approx.)

Koh Nang Yuan viewpoint showing triple island connected by white sand beaches and turquoise waters Thailand

Koh Tan and Koh Madsum Kayaking and Snorkeling Tour from Koh Samui – Speedboat Day Trip to Best Coral Reefs and Pig Island Beaches

Koh Tan & Koh Madsum

Free Cancellation

6 to 7 hours (approx.)

Couple kayaking in yellow kayak on turquoise water with tropical islands backdrop Koh Madsum Thailand

Koh Tao and Koh Nang Yuan Speedboat Snorkeling Tour from Koh Samui – Multi-Bay Adventure with Viewpoint Hike and Thai Beach Lunch

Koh Tao

Free Cancellation

9 hours (approx.)

Family snorkeling group floating in crystal clear turquoise water Koh Tao Gulf of Thailand

Pig Island Snorkeling Tour from Koh Samui – Koh Madsum Pig Encounter and Koh Tan Speedboat Adventure with Beach Lunch

Koh Tan & Koh Madsum

Free Cancellation

4 to 5 hours (approx.)

Family snorkeling in crystal clear turquoise water at Koh Tan island near Koh Samui Thailand

Koh Tao 2-Dive Day Trip for Certified Divers from Koh Samui – Premium Speedboat Diving Experience at Gulf of Thailand’s Best Sites

Chumphon Pinnacle, Koh Tao, Shark Island

Free Cancellation

8 hours (approx.)

Certified scuba diver swimming with hawksbill sea turtle in crystal blue waters at Koh Tao dive site Thailand

Koh Tao Scuba Diving Adventure by Catamaran from Koh Samui – Premium 2-Dive Day Trip to Thailand’s Best Dive Sites

Koh Tao

Free Cancellation

7 hours (approx)

Scuba diver exploring coral reef underwater in Koh Tao Gulf of Thailand during catamaran diving tour from Koh Samui

Angthong Marine Park Snorkeling and Kayaking Tour by Speedboat from Koh Samui – Full-Day Adventure with Emerald Lake Viewpoint and Island Exploration

Ang Thong Marine Park

Free Cancellation

7 to 8 hours (approx.)

Aerial view of pristine white sand beach with palm trees and tour boats in turquoise waters at Ang Thong Marine Park Koh Samui Thailand

Koh Samui Dive & Snorkel Guides

Destination guides, dive site breakdowns, and honest advice to help you plan the perfect Koh Samui water adventure.

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October 18, 2025