Diving & Snorkeling Tours in Thailand
101 tours across 18 destinations
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.
101 tours
Showing 49 to 72
Phi Phi and Bamboo Islands Snorkeling Tour With Lunch
Pattaya Full-Day 3-Island Tour: Snorkeling and Buffet
Phi Phi & Bamboo Islands Tour, Small Groups of 20
Koh Nangyuan & Koh Tao Snorkel Tour Aboard the Oxygen
5 Island Snorkelling Trip Around Koh Tao & Koh Nang Yuan
Krabi 4-Island Luxury Yacht: Snorkelling and Clear Kayaking
Pattaya Sunset Yacht Tour: Island Buffet and Snorkeling
Phi Phi Islands Day Trip from Khao Lak with Lunch
Koh Tao Snorkeling Tour to Hidden Bays and Koh Nang Yuan
Phuket Coral Island Private Snorkeling Tour: All-Inclusive
Pig Island Tour by Speedboat with Snorkeling
Krabi 4 Island Tour: Private Long-tail Boat Charter
Snorkeling Adventure at Koh Chang – Departing from Koh Chang
Krabi Early Bird Speedboat Tour: Phi Phi & 4 Islands
Local Reef Snorkelling and Deserted Beach
5 Islands Full-Day Tour Around Koh Tao and Koh Nangyuan
Highlights of Phi Phi Islands
Sunset Dinner Cruise with night Swimming by Luxury Junk Boat
Phi Phi One Day Tour by Speed Boat from Ao Nang, Krabi
Koh Tao Sunset Snorkeling Day Trip: Tao and Nang Yuan
Road trip around Koh Phangan-Join Trip (Shared road trip)
Diving Tour for Certified Divers: Sail Rock or Koh Tao
PADI Discover Scuba Diving in Koh Tao: Half-Day, Two Dives
Surin Islands Snorkeling Trip from Phuket
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.