Diving & Snorkeling Tours in Koh Tao
18 tours in and around Koh Tao
Thailand is where many divers get certified. Koh Tao issues more PADI Open Water certifications than anywhere else on earth: calm bays, cheap accommodation, and dive schools that have been running multi-day courses since the 1980s. Open Water courses run 3-4 days for around $350-450 all-in. For certified divers, the Similan Islands (November-April only) rival anywhere in Southeast Asia for visibility and big pelagics. Phuket and Koh Lanta both launch day trips to Phi Phi, Koh Haa, and Hin Daeng. Sail Rock off Koh Phangan is the Gulf of Thailand's signature pinnacle dive.
18 tours in Koh Tao
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Full day snorkeling adventure around Koh Tao
Open Water Course - Become certified diver in 3 days
Koh Tao SSI Advanced Adventurer Course, 2 to 3 Days
Open Water Course
La Bombona Diving Koh Tao Open Water Course
Koh Tao PADI Open Water Diver Course, 3 Days
Full Day Treasure Hunt on Koh Tao
Koh Tao Snorkel Tour of the Bays Aboard the Oxygen
Koh Tao and Koh Nang Yuan VIP Small Group Tour
Fun Diving Packages (Certified Divers)
Koh Nangyuan & Koh Tao Snorkel Tour Aboard the Oxygen
5 Island Snorkelling Trip Around Koh Tao & Koh Nang Yuan
Koh Tao Snorkeling Tour to Hidden Bays and Koh Nang Yuan
5 Islands Full-Day Tour Around Koh Tao and Koh Nangyuan
Koh Tao Sunset Snorkeling Day Trip: Tao and Nang Yuan
Diving Tour for Certified Divers: Sail Rock or Koh Tao
PADI Discover Scuba Diving in Koh Tao: Half-Day, Two Dives
Koh Tao and Koh Nang Yuan Snorkeling Tour From Samui
Diving & Snorkeling in Thailand: FAQ
Do I need a diving certification?
For "Discover Scuba" intro dives, no: any healthy adult can do a supervised single dive in shallow water after a briefing. For deeper or multi-dive days, you need at least Open Water certification. Show your C-card (physical or digital) at check-in.
How long does a PADI Open Water course take?
Three to four days, usually $350-450 including manual, rental gear, and 4 training dives. Koh Tao and Koh Lanta have the most competitive pricing. The course covers theory (quiz and exam), confined-water skills (swimming pool), and open-water dives.
When are the Similan Islands open?
Mid-November to mid-April. The Similans close every monsoon season to protect marine life. Outside these dates, Richelieu Rock and Koh Bon are also closed. For April-October diving, head to Koh Tao or the Gulf.
Are liveaboards worth it over day trips?
For experienced divers who want remote sites (Similan 9, Koh Bon, Richelieu), yes: liveaboards visit 3-4 dive sites per day and unlock the outer islands. For beginners or casual divers, 1-2 day trips from Khao Lak or Phuket are plenty.