The 3 Best Islands in Thailand:
- Ko Samui: Best for high-end resorts, restaurants, and spas
- Ko Pha-Ngan: Best for younger travelers and hedonistic full-moon beach parties
- Ko Tao: Best for world-class scuba diving
Choosing the perfect island escape in Thailand is like shopping for cologne at a perfume store — there are just too many fabulous options to choose from! Your quest to pick the ideal speck of emerald jungle and turquoise seas could quickly descend into a state of dizzying confusion.
However, help is at hand! Thailand boasts countless islands with golden beaches, lush stands of tropical forest, and dazzling coral reefs. The prime location for a first-time Thai island adventure is the Gulf of Thailand, where three lovely tropical islands compete for the attention of lovers of sand, sea, and spices.
Ko Samui, Ko Pha-Ngan, and Ko Tao are located smack in the middle of the Gulf of Thailand, offshore from the southern city of Surat Thani. Each offers its own unique collection of island experiences and, therefore, are perfect for breaking into Thailand’s island circuit.
Whether you’re a luxury lover, a beach bum, a party-goer, a wellness seeker, or an adventure junkie, here’s our guide to choosing your ideal island in the Gulf of Thailand.
1. Ko Samui
Best for high-end resorts, restaurants, and spas
Also good for wellness retreats
Ko Samui’s indulgent riviera vibe works its magic on well-heeled travelers who don’t mind spending money on fancy experiences. Elegant five-star resorts occupy gorgeous vantage spots on clifftops and unfurl along white-sand beaches or amidst serene forest glades, offering luxury accommodation, curated dining experiences, and pampering spa services. Notable resorts like Anantara Bophut, W Koh Samui, and Banyan Tree Samui are among the headliners here for top-end offerings.
For those inclined towards a lavish spa experience, rejuvenation centers such as Eranda Herbal Spa, the Spa at Four Seasons Koh Samui, and Luxsa Spa provide ultimate relaxation. In recent years, the island has also become popular as a destination for holistic detox, attracting travelers seeking mind and soul realignment along with lavish pampering. Absolute Sanctuary and Kamalaya are among the country’s best-known wellness retreats, offering all-inclusive luxury packages focused on detoxing, de-stressing, and emotional therapy.
Moreover, immersing yourself in nature is an excellent way to recalibrate on a trip to Samui. Start with a boat trip to nearby Ang Thong Marine National Park, a spectacular sanctuary made up of scattered islands, defined by towering limestone cliffs rising from sparkling lagoons. Koh Samui Boat Charter and Oceana Samui have upscale fleets for day charters to the national park and other nearby beauty spots.
As the biggest of the three gulf islands, Ko Samui is known for its active nightlife center, especially in bustling beach settlements such as Chaweng and Fisherman’s Village in Bo Phut. Here, there is a generous assortment of beachside restaurants offering fine Mediterranean, pan-Asian, and Thai seafood, along with plenty of bars serving delicious cocktails, wine, and chilled beer to complement stunning sunset views.
Lastly, there are cultural experiences to be had, such as visiting Buddhist monasteries and taking part in cooking courses, snorkeling trips, and Muay Thai boxing camps.
2. Ko Pha-Ngan
Best for younger travelers and hedonistic full-moon beach parties
Also good for yoga and digital nomad life
Bohemian Ko Pha-Ngan has aged gracefully over the years. Once the epicenter of hedonistic excess, its legendary full-moon parties have become a more civilized affair in recent years. However, the monthly party on Hat Rin beach remains a rite of passage for many young travelers drifting through Southeast Asia, drawing party lovers like moths to a flame.
Check upcoming party dates online to better plan your trip. The festivities kick off on the evening of the full moon with beachfront bars pumping out reggae and trance beats, enticing hordes onto the open beach that serves as a dance floor. As the night progresses, fire breathers and spinners showcase their talents, captivating revelers with vibrant performances.
Moreover, it’s vital to keep your senses sharp; dealers often tout harmful substances despite regular police raids. History has shown drownings under the influence, so exercise caution.
In addition, Ko Pha-Ngan has become a popular hub for digital nomads looking to work amidst tropical beauty. Shared living and working spaces such as Beachub, La Casa Tropicana, and Koh Space attract remote workers with amenities optimized for longer stays.
The island is also known for its yoga and Ayurveda spots, providing excellent options for detox after a late night. Samma Karuna offers packages integrating yoga, art therapy, meditation, and Ayurvedic healing, while Orion Healing Centre provides vegan food, reiki treatments, and yoga programs.
3. Ko Tao
Best for world-class scuba diving
Also good for freediving, hiking, and snorkeling
Visiting Ko Tao means spending ample time beneath its crystal-clear waters. Regarded as one of the best places globally for scuba diving training, this island offers everything from certification courses for beginners to programs for diving professionals. Notably, it is among the most affordable destinations to learn to dive, with PADI certification courses starting around US$300.
With an impressive array of shallow coral reefs and deeper rock formations and shipwrecks, Ko Tao caters to both novice and seasoned divers equally. The waters teem with diverse marine life, including whale sharks, blacktip reef sharks, eagle rays, and hawksbill turtles. Iconic dive sites such as Chumphon Pinnacle and Sail Rock are not to be missed.
Top dive centers like Black Turtle Dive, Sairee Cottage Diving, and Big Blue Diving offer excellent facilities, equipment rental, and quality instruction. They provide customizable packages that serve everyone from weekend divers to those looking to become professionals.
If you’re interested in marine conservation, dive companies like The Coral Tribe offer courses focusing on coral reef monitoring and marine resource management. For non-divers, shallow sites such as Hin Wong, Ao Leuk, and Shark Bay present superb snorkeling opportunities, often with turtle and reef shark sightings.
Koh Tao also provides options for those preferring to explore the marine realm without heavy gear. Freediving, where divers descend to great depths on a single breath, is gaining traction, with Apnea Total recognized as a trusted center for learning this exciting discipline.
Finally, for those preferring dry land adventures, consider hiking to one of Ko Tao’s stunning hilltop viewpoints, such as West Coast Viewpoint or Tanote Peak Viewpoint. The nearby island of Koh Nang Yuan, accessible by long-tail boat, also offers delightful hiking trails, with rewarding vistas from the top.
How to Get to Thailand’s Gulf Islands
Reaching Thailand’s gulf islands is straightforward by plane or boat. Ko Samui is served by daily flights from Bangkok and other cities in Thailand and neighboring Southeast Asian countries, primarily operated by Bangkok Airways. For a more eco-friendly option, regular ferries run from the mainland to the islands, with simple connections available.
Lomprayah offers interisland connections and transfers from Chumphon, while Songserm and Seatran operate boats from Don Sak Pier and Tapee Pier, both near Surat Thani. Additionally, daily trains run from Bangkok to Surat Thani and Chumphon, continuing toward the Malaysian border.
