Koh Tao

This small island in Surat Thani province has earned its reputation as Thailand’s premier scuba diving destination. Koh Tao draws underwater enthusiasts from around the world who come for affordable PADI certifications, colourful coral reefs, and that laid-back island atmosphere you can’t find on the mainland. The island attracts backpackers, dive professionals, and anyone seeking a slower pace away from Thailand’s busier beach destinations. Within the Gulf of Thailand region, Koh Tao stands out as the place where serious divers go to train, explore underwater sites, and often end up staying much longer than planned.

Top Things To Do

Scuba diving dominates the island’s activity scene, and for good reason. The surrounding waters offer excellent visibility and diverse marine life perfect for both beginners and advanced divers. PADI certification courses are incredibly popular and affordable here compared to other destinations worldwide. Many visitors arrive planning a few days and leave weeks later with their Open Water or Advanced certifications. Beyond diving, snorkeling trips let you explore the underwater world without full gear. The island’s small size makes it perfect for motorbike exploration, leading you to viewpoints, quiet beaches, and local restaurants. Rock climbing has grown in popularity, with several spots offering routes for different skill levels. Sunset watching becomes a daily ritual, particularly from the western viewpoints.

Where to Stay in Koh Tao: Best Areas

For a first trip, stay on Sairee Beach: it has the longest beach on the island, the most dive shops, bars and restaurants, and it is easy to walk everywhere. Mae Haad suits short stays and early ferries because the main pier is on your doorstep. Chalok Baan Kao and the southeast bays (Shark Bay, Thian Og and Sai Daeng) are the quieter choices for couples, families and divers who want to sleep early. Tanote Bay and Aow Leuk on the east side are the most secluded, and you will want a scooter there.

Sairee Beach

Sairee is where most people base themselves. Dive schools, beach bars and restaurants line the sand, and sunsets over the water are part of the daily routine. The northern end is calmer than the middle, which is the stretch to avoid if you want an early night. The drawback is that the main strip gets lively after dark.

Picks: Koh Tao Cabana is a four-star beachfront resort at the quiet northern end, La Cigale puts you on the sand close to the dining strip, and Summer Guesthouse & Hostel is the budget pick in the middle of everything. For private pools, look at Anankhira Villas.

Mae Haad

Mae Haad is the pier village, so supermarkets, ATMs, dive shops and ferries are all close. It works well when you arrive late, leave on an early boat or plan several day trips. The drawback is that it feels more like a working harbour than a beach resort, and Sairee’s nightlife is a short taxi ride away.

Picks: Koh Tao Montra Resort and Spa is a four-star beachfront option with a pool, Sensi Paradise Beach Resort gives direct sand access near the pier, and Nadapa Resort Koh Tao is the budget choice beside the dive shops.

Chalok Baan Kao

This southern bay is relaxed and low-key, with snorkelling off the rocks and a calmer crowd than Sairee. It suits divers who want quiet nights and travellers who find the main strip too social. The drawback is limited evening choice, so expect to hire a scooter or taxi to eat out elsewhere.

Picks: View Point Resort is beachfront and aimed at divers, Koh Tao Relax Freedom Beach Resort offers sea-view rooms and pier transfers, and The Dearly Koh Tao Hostel is a beachfront hostel with its own dive centre.

Shark Bay, Thian Og and Sai Daeng

The southeast bays are the best fit for families and couples who want clear water and snorkelling close to the room. Shark Bay (Hat Tien) is the standout for easy snorkelling, and the hillside above Thian Og has the island’s most polished resorts. The drawback is the terrain: roads are steep and getting to Sairee takes a proper ride.

Picks: Haadtien Beach Resort is a four-and-a-half-star beachfront family option, Jamahkiri Dive Resort & Spa is the five-star spa resort above Thian Og, and Coral View Resort is a beachfront mid-range stay at Sai Daeng.

Tanote Bay and Aow Leuk

The east coast is for people who want to be away from it all. Expect quiet bays, hillside rooms with sea views and very little traffic. The drawback is distance: dive shops and nightlife are across the island, so a scooter is close to essential.

Picks: Ecotao Lodge is a four-star eco-lodge with an infinity pool, Baan Talay Resort & Yoga sits on quiet Aow Luek Bay with yoga classes, and Tanote Villa has a room range that includes a private-pool suite.

Insider Tip: Ask your dive shop whether it collects from your bay before you book a room. Some shops pick up island-wide and some only cover nearby areas, and a long morning ride is a poor start to a dive day.

For more options on the sand, see our beachfront resorts shortlist.

Getting There

Reaching Koh Tao requires a ferry journey since there’s no airport on the island. Most travelers fly into Bangkok or Koh Samui, then take buses and ferries to reach the island. The Lomprayah and Seatran ferries run regular services from the mainland ports of Chumphon and Surat Thani, as well as from nearby Koh Samui and Koh Phangan. The journey from Bangkok involves an overnight bus to Chumphon followed by a morning ferry, taking about 10-12 hours total. From Koh Samui, ferries take around 2 hours.

Best Time To Visit

The Gulf coast wet season runs October through December, making January through September your best bet for diving and beach activities. March through May brings the hottest temperatures but excellent underwater visibility. June through August sees moderate crowds and good weather conditions. While the wet season brings afternoon showers and rougher seas, diving still continues year-round. Many dive shops actually prefer the quieter wet season months for training courses.

Practical Tips

ATMs are available in the main areas, though some charge fees for international cards. Most dive shops, restaurants, and hotels speak English well since tourism revolves around international visitors. Motorbike rental is the standard way to get around the island - just ensure you have proper licenses and insurance. The island runs on a slower schedule, so don’t expect mainland efficiency. Bring reef-safe sunscreen since you’ll likely spend considerable time in the water.

Insider Tip: Book your PADI courses directly with dive shops rather than through hotels or online platforms. You’ll often get better prices and can choose instructors who match your learning style. Many shops offer package deals combining accommodation with dive courses.