Koh Tao
Photo: Darren Lawrence / Unsplash
Key Facts
Best Time to Visit
March to September (calm seas, 28-32°C, best diving visibility 20-40m). October-December has monsoon swells. Whale shark season: March-April
Language
Thai; English widely spoken due to dive tourism
Currency
Thai Baht (THB)
Time Zone
ICT (UTC+7)
Airport
Koh Samui Airport (USM), then 1.5-hour ferry; or Surat Thani (URT) and 5-hour ferry/bus combo
Population
~2,000 permanent residents; swells to 10,000+ with tourists and dive staff
Climate
Tropical, avg 27-32°C year-round, wettest October-December
Safety Rating
Generally Safe (Level 1) — exercise caution with motorbikes and late-night activities
Top Highlights
Sail Rock (Hin Bai)
Koh Tao's premier dive site — a granite pinnacle rising from 40m depth to 15m above the surface, midway between Koh Tao and Koh Phangan. Famous for its vertical swim-through chimney, schooling barracuda, batfish, and whale shark sightings (March-May). Boat trip: 1,200-1,800 THB (~$34-50) for two dives. Advanced Open Water recommended. Visibility routinely exceeds 20m. Book a day in advance during peak season.
Tanote Bay
A picturesque east-coast bay framed by giant granite boulders with excellent shore snorkeling among coral gardens and blacktip reef sharks. Free beach access. Snorkel gear rental: 150-200 THB (~$4-5.60). The cliff jumping rock on the south side is popular (3-5m drops into deep water). A treehouse bar perched on the rocks serves cocktails with a view. Best snorkeling: morning before waves pick up.
PADI Open Water Certification
Koh Tao is the cheapest place in the world to get PADI certified — Open Water courses run 8,500-10,000 THB (~$240-280) for 3-4 days including all dives, gear, materials, and often free accommodation. Over 70 dive shops compete for your business. Top-rated shops: Crystal Dive, Big Blue, Ban's Diving. Book directly for best prices. The warm, calm waters and shallow sites make it ideal for beginners.
John-Suwan Viewpoint
A moderately challenging 30-minute hike from Chalok Baan Kao Bay to a panoramic viewpoint overlooking both Shark Bay and the southern coastline. Entry: 50 THB (~$1.40). The trail winds through boulders and jungle — wear proper shoes (not flip-flops). Early morning or late afternoon for best light and cooler temperatures. On clear days you can see Koh Phangan to the south.
Shark Bay (Thian Og Bay)
A sheltered bay on the south coast where juvenile blacktip reef sharks patrol the shallows — you can spot them from the beach. Entry: 100 THB (~$2.80). Snorkeling here is excellent with healthy coral and sea turtles feeding on seagrass. Best viewed at low tide when sharks come closer to shore. The bay is also a nesting area for hawksbill turtles. Respectful distance is mandatory.
Mango Viewpoint
The highest accessible viewpoint on Koh Tao with a 360-degree panorama of the island, surrounding sea, and neighboring islands. Reach it by a steep dirt road (4x4 or walk — regular scooters struggle). Entry: 100 THB includes a mango smoothie at the top. Open 9AM-5:30PM. The road is the adventure — seriously steep and rutted. Walk if your scooter skills aren't expert level.
Planned Itinerary
7-Day Koh Tao Itinerary
Arrival on Koh Tao
Ferry from Koh Samui or Surat Thani to the dive capital of Southeast Asia.
Lomprayah catamaran from Koh Samui(1.5 hours)
THB 600 one-way. Or night ferry from Surat Thani (8h, THB 600 with bunk). Lomprayah.com for schedules
Check-in on Sairee Beach(30 minutes)
The main strip. In Touch Resort (THB 800-2,000). Budget: hostels from THB 300. Many dive schools offer free accommodation with courses
Lunch at Barracuda Restaurant(1 hour)
Sairee Beach. Thai set lunch THB 120. The green curry is excellent. Sea views from the terrace
Sairee Beach sunset walk(1.5 hours)
1.7km of sand with beach bars every 50 meters. Walk the full length as the sun drops. Grab a cold Chang from a beachfront bar (THB 80)
PADI Open Water Day 1 (or Snorkeling Tour)
Start the world's cheapest PADI certification, or join a snorkeling tour if already certified.
PADI Open Water course Day 1 at Crystal Dive(6 hours)
THB 8,500-10,000 for full 3-4 day course. Day 1: theory, pool session, confined water skills. Crystal Dive, Big Blue, and Ban's Diving are top-rated. Book directly for best prices. Free accommodation often included
Alternative: Full-day snorkeling tour(6 hours)
THB 700-1,000. Visit 5 sites including Shark Bay, Japanese Gardens, and Hin Wong Bay. Includes lunch, gear, and guide
Dinner at The Gallery Restaurant(1.5 hours)
Upscale Thai-fusion on Sairee. Massaman duck curry THB 280. Candlelit beachfront dining. Book for sunset
PADI Day 2 (or Tanote Bay)
First open water dives, or explore Koh Tao's most beautiful bay.
PADI Open Water Day 2(6 hours)
First open water dives at shallow sites (6-12m). See your first reef underwater — clownfish, parrotfish, and maybe a turtle. The warm, clear water makes everything easier
Alternative: Tanote Bay(4 hours)
Motorbike to the east coast (THB 200/day rental — careful, roads are steep). Tanote Bay: granite boulders, excellent shore snorkeling, cliff jumping (3-5m). Snorkel gear THB 150-200. Blacktip reef sharks common. The treehouse bar on the rocks serves cocktails with a view
Evening at Fizz Beachlounge(2 hours)
Sairee's popular bar. Fire show at 10PM most nights. Cocktails THB 180
John-Suwan Viewpoint & Shark Bay
Panoramic hike and snorkeling with blacktip reef sharks and sea turtles.
John-Suwan Viewpoint hike(1.5 hours)
From Chalok Baan Kao Bay. THB 50 entry. 30-minute moderate hike through boulders and jungle. Panoramic views of Shark Bay and the southern coastline. Proper shoes needed
Shark Bay (Thian Og Bay)(2 hours)
THB 100 entry. Juvenile blacktip reef sharks patrol the shallows — spot them from the beach. Sea turtles feed on seagrass. Best at low tide. Snorkeling is excellent. Respectful distance mandatory
Lunch at Viewpoint Restaurant, Chalok(1 hour)
Simple Thai food with bay views. Pad krapow THB 100
Chalok Baan Kao sunset(1.5 hours)
Koh Tao's most peaceful bay for sunset. Less hectic than Sairee. New Heaven dive bar has a chilled vibe
PADI Day 3/4 — Certification! (or Mango Viewpoint)
Final dives and certification, or conquer Koh Tao's highest viewpoint.
PADI completion dives(5 hours)
Final skills assessment and fun dives. Congratulations — you're a certified diver. The warm-water certification stays with you forever
Alternative: Mango Viewpoint(2 hours)
THB 100 entry (includes mango smoothie). Koh Tao's highest viewpoint. 360° panorama. The road is seriously steep — walk if scooter skills aren't expert. Open 9AM-5:30PM
Celebration dinner at Whitening Bar(1.5 hours)
Sairee Beach. Seafood barbecue on the sand THB 350. Live music and fire shows. The PADI celebration tradition
Rest Day — Beach & Free Exploration
Recover from the dive course with a slow day.
Morning at Sairee Beach(2 hours)
The northern end is quieter. Swim, read, doze
Lunch at Chopper's Bar & Grill(1 hour)
Burgers and milkshakes. The bacon burger (THB 250) is a hangover classic
Afternoon at Aow Leuk Bay(2 hours)
East coast bay with excellent shore snorkeling. THB 100 entry. Coral and fish right from the beach. Less crowded than Tanote
Sunset at Sairee corner bar(1.5 hours)
The rocky point at Sairee's south end. Cocktails on granite boulders watching the sky change
Departure — Sail Rock or Last Swim
Optional early-morning dive at Koh Tao's premier site, then ferry out.
Optional: Sail Rock dive trip(5 hours)
THB 1,200-1,800 for two dives. Koh Tao's best site — granite pinnacle with vertical chimney swim-through, schooling barracuda, possible whale sharks (March-May). Advanced OW recommended. Departs 6:30AM, returns 11AM
Lomprayah catamaran to Koh Samui or Surat Thani(1.5-2 hours)
THB 600. Afternoon departures available. Book ahead in peak season
14-Day Koh Tao Itinerary
Arrival on Koh Tao
Ferry to the dive capital.
Lomprayah from Samui(1.5 hours)
THB 600
Check-in Sairee Beach(30 minutes)
In Touch Resort THB 800-2,000
Lunch at Barracuda(1 hour)
Green curry THB 120
PADI Open Water Day 1
Start certification.
PADI Day 1 at Crystal Dive(6 hours)
THB 8,500-10,000 full course. Theory, pool, confined water
Dinner at Gallery(1.5 hours)
Massaman duck THB 280
PADI Day 2
First open water dives.
PADI Day 2(6 hours)
First dives 6-12m. Clownfish, parrotfish, maybe turtle
Fizz Beachlounge(2 hours)
Fire show 10PM. Cocktails THB 180
PADI Day 3 — Certified!
Complete certification.
PADI completion dives(5 hours)
Certified diver. Warm-water skills stay forever
Celebration at Whitening Bar(1.5 hours)
Seafood BBQ on sand THB 350
John-Suwan & Shark Bay
Hike and snorkel with sharks.
John-Suwan Viewpoint(1.5 hours)
THB 50. Panoramic views
Shark Bay(2 hours)
THB 100. Blacktip sharks, sea turtles
Tanote Bay & East Coast
Granite boulders, cliff jumping, snorkeling.
Motorbike to Tanote Bay(30 minutes)
THB 200/day. Steep roads — careful
Tanote snorkeling and cliff jump(3 hours)
Gear THB 150. Blacktip sharks. Treehouse bar cocktails
Hin Wong Bay(2 hours)
Next bay north. The best snorkeling on the island — steep coral wall. No beach, just rocks and incredible reef
Rest Day
Recovery day after diving. Rest, hydrate, and stay out of the water for 24h before any flights. Beach reading recommended.
Chopper's burger(1 hour)
THB 250
Aow Leuk Bay(2 hours)
THB 100. Shore snorkeling
Sail Rock Dive
Koh Tao's premier dive site.
Sail Rock two-dive trip(5 hours)
THB 1,200-1,800. Granite pinnacle, chimney swim-through, barracuda, possible whale sharks March-May. Advanced OW recommended
Evening at Lotus Bar(1.5 hours)
Chalok's chilled bar. Rasta vibes, cheap beers
Advanced Open Water Day 1
Level up your diving skills.
AOW course Day 1(6 hours)
THB 7,500-9,000 for 2-day course. Deep dive, navigation, buoyancy, night dive, and specialty of choice. Opens deeper dive sites worldwide
AOW Day 2 — Night Dive
Complete advanced certification with a night dive.
AOW daytime dives(4 hours)
Deep dive to 30m. The world opens up at depth
Night dive(2 hours)
Included in AOW. Dive at dusk — the reef transforms. Sleeping parrotfish, hunting moray eels, bioluminescence. Your torch beam creates a new underwater world
Mango Viewpoint & Free Day
Highest viewpoint and beach time.
Mango Viewpoint(2 hours)
THB 100 with mango smoothie. 360° panorama. Walk — the road defeats most scooters
Freediving Introduction
Try freediving — Koh Tao is also a freediving hub.
Freediving discovery course(4 hours)
Apnea Total or Blue Immersion (THB 3,500-5,000). Learn breath-hold techniques and dive to 10-15m on a single breath. Different from scuba — meditative and primal
Reef conservation volunteer session(2 hours)
New Heaven Reef Conservation Program welcomes volunteers for reef restoration. Plant coral fragments, survey marine life. THB 500 for a half-day session. Meaningful
Final Dive & Farewell
One more dive at your favorite site, then farewell dinner.
Fun dive at favorite site(3 hours)
THB 700-900 per dive. Return to the site that moved you most
Farewell dinner at The Gallery(2 hours)
Best restaurant on the island. Sunset, seafood, gratitude for what you learned underwater
Departure
Last morning and ferry.
Ferry to Samui or Surat Thani(1.5-2 hours)
THB 600. Book ahead peak season
21-Day Koh Tao Itinerary
Arrival on Koh Tao
Ferry to the island.
Lomprayah catamaran(1.5 hours)
THB 600
PADI Open Water Day 1
Course begins.
PADI Day 1(6 hours)
THB 8,500-10,000. Theory, pool, confined water
PADI Day 2
First open water dives.
PADI Day 3 — Certified!
Certification complete.
John-Suwan & Shark Bay
Hike and shark snorkeling.
John-Suwan(1.5 hours)
THB 50
Shark Bay(2 hours)
THB 100
Tanote & Hin Wong Bays
East coast snorkeling.
Tanote Bay(2.5 hours)
Cliff jumping, treehouse bar
Hin Wong Bay(2 hours)
Best snorkeling on island. Steep coral wall
Rest Day
Recovery day after diving. Rest, hydrate, and stay out of the water for 24h before any flights. Beach reading recommended.
Sail Rock Dive
Premier dive site.
Sail Rock(5 hours)
THB 1,200-1,800. Chimney, barracuda, whale sharks Mar-May
AOW Day 1
Advanced certification begins.
AOW Day 1(6 hours)
THB 7,500-9,000. Deep, navigation, buoyancy
AOW Day 2 — Night Dive
Advanced certified with night dive.
Night dive(2 hours)
Sleeping parrotfish, moray eels, bioluminescence
Mango Viewpoint & Free Day
Highest viewpoint.
Mango Viewpoint(2 hours)
THB 100 with smoothie
Freediving Discovery
Breath-hold diving introduction.
Freediving course(4 hours)
THB 3,500-5,000. Dive to 10-15m on one breath
Reef conservation volunteering(2 hours)
New Heaven program. Coral planting THB 500
Chumphon Pinnacle Dive
Koh Tao's deepest site — whale shark territory.
Chumphon Pinnacle two-tank(5 hours)
THB 1,500-2,000. Massive granite pinnacles at 30m+. Schools of chevron barracuda, giant groupers, and the best whale shark odds in the Gulf. AOW required for the deep sections
Evening at DOJO bar(1.5 hours)
Muay Thai themed bar near Sairee. Friday fight nights
Full Rest Day
No diving. Full beach day.
Koh Phangan Day Trip
Ferry to the neighboring island for different vibes.
Ferry to Koh Phangan(30 minutes)
THB 300 one-way. Multiple daily departures
Bottle Beach(3 hours)
Accessible only by boat or steep hike. One of the most beautiful beaches in the Gulf. Longtail boat from Chalok Lam (THB 100)
Lunch at Bottle Beach restaurant(1 hour)
Simple Thai food on paradise sand
Thong Nai Pan area(2 hours)
Twin bays on the east coast. More developed but beautiful
Wreck & Reef Specialty Dives
Specialty dives — HTMS Sattakut wreck and drift dive.
HTMS Sattakut wreck dive(3 hours)
THB 1,000 per dive. A decommissioned naval vessel sunk as an artificial reef at 30m south of Koh Tao. Batfish, barracuda, and coral growth. AOW required
Drift dive at Hin Ngam(2 hours)
A gentle current carries you past colorful soft corals and sea fans. Relaxing and beautiful. Included in dive day package
Around-the-Island Longtail Tour
Hire a longtail boat and visit every bay on the island.
Longtail boat tour(6 hours)
THB 1,500-2,000 for a private longtail (up to 4 people). Circle the island stopping at every bay — Mango, Tanote, Aow Leuk, Shark Bay, Sairee. The captain knows the secret spots
Snorkeling at multiple sites(Included)
Jump off the boat at each bay. The best snorkeling is from a boat — access sites you can't reach from shore
Beach picnic(1 hour)
Pack Thai food from town. Eat on a deserted beach
Free Day
Unstructured.
Underwater Photography Dive
Rent an underwater camera and dive your favorite sites with a photography focus.
Underwater camera rental and dive(5 hours)
THB 500 camera rental + dive cost. Most dive shops rent GoPros. Two dives at photogenic sites — Japanese Gardens (shallow, colorful) and Twins (dramatic rock formations). Focus on composition
Photo editing afternoon(2 hours)
Download and edit at a Sairee cafe with good wifi
Last Full Day — Dive & Farewell
Final dive, final beach day, farewell dinner.
Morning fun dive(3 hours)
Your favorite site, one last time
Sairee Beach afternoon(3 hours)
The beach that became home for three weeks
Farewell dinner at The Gallery(2 hours)
Sunset, seafood, and gratitude. Koh Tao changed how you see the ocean
Departure
Last morning.
Ferry out(1.5 hours)
Lomprayah to Samui or Surat Thani. THB 600
Travel Tips
Visa & Entry
Standard Thai Visa Exemption Applies
60-day visa-free entry for citizens of 57 countries (as of 2024). Koh Tao is part of Surat Thani province — no additional permits needed. If you overstay to finish a dive course, the fine is 500 THB/day payable at the airport. Immigration occasionally does spot checks on the island.
transport
Ferry Routes — Multiple Options
From Koh Samui: Lomprayah catamaran (1.5h, 600 THB / ~$17) or Seatran Discovery (1.5h, similar price). From Surat Thani (mainland): night ferry (8h, 600 THB, includes bunk) or Lomprayah bus+catamaran combo (5h, 1,050 THB / ~$30). From Bangkok: joint bus+ferry tickets from Khao San Road agencies (12-14h, 900-1,200 THB). Book Lomprayah at lomprayah.com for guaranteed schedules.
Budget
Dive Packages Include Free Accommodation
Most dive schools offer free or heavily discounted accommodation if you book a course with them. An Open Water course (8,500-10,000 THB) with 3 nights free accommodation is a better deal than paying separately. Compare shops in person on Sairee Beach. Food on Koh Tao is pricier than the mainland — expect 80-150 THB for Thai food, 200-350 THB at Western restaurants.
Safety
Motorbike Roads Are Extremely Dangerous
Koh Tao's roads are notoriously steep, unpaved in parts, and poorly lit. Multiple tourist injuries occur daily. The road to Tanote Bay and Mango Viewpoint are the worst — near-vertical in places. Scooter rental is 200-300 THB/day but your insurance almost certainly won't cover an accident. Walk or hire a longtail boat to remote beaches instead.
Drink Spiking Is a Known Issue
Koh Tao has a documented problem with drink spiking at some bars, particularly on Sairee Beach. Never leave drinks unattended, always watch your drink being poured, and go out with friends. Avoid accepting free drinks from strangers. If you feel suddenly intoxicated beyond what you've consumed, seek help immediately. The island's hospital is basic — serious cases are transferred to Koh Samui.
Local Customs
Respect the Coral — Reef-Safe Sunscreen Only
Koh Tao's reefs are under pressure from tourism. Use reef-safe sunscreen (no oxybenzone or octinoxate) — many dive shops sell it. Don't touch, stand on, or take coral. The island's marine conservation programs (like the New Heaven Reef Conservation Program) welcome volunteers for reef restoration if you're staying longer than a week.
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