Escape the crowds and uncover secluded island perfection in tropical Thailand
As one of the most popular beach destinations in the world, Thailand attracts millions of tourists every year. While famous islands like Phuket and Koh Samui overflow with crowds, there are dozens of pristine, untouched islands across the Andaman Sea and Gulf of Thailand that remain off-the-beaten-path. These hidden gems provide the authentic Thai island experience without the tourist throngs.
In this extensive guide, we will uncover Thailand’s least explored islands and reveal how to find your own secret slice of paradise. From remote diving havens to barely inhabited beaches, keep reading to discover Thailand’s best hidden island escapes waiting for you to uncover.
Koh Lanta – Thailand’s Laidback Island Getaway
Tucked away along Thailand’s glorious Andaman coastline, Koh Lanta oozes tropical island charm. This long, narrow island stretches over 18 miles from top to bottom, providing visitors with a bounty of natural attractions.
Powdery white sand beaches like Klong Dao Beach, Phra Ae Beach, and Khlong Khong Beach offer swathes of sand for sunbathing, swimming, and beachcombing. Inland, thick rainforest cloaks the mountainous interior, creating the perfect environment for jungle trekking, birdwatching, and waterfall chasing.
The island is also renowned for its marine life, including whale sharks, manta rays, sea turtles, and thriving coral reefs prime for diving and snorkeling.
While the north of Koh Lanta caters to tourists with its lively beach towns, the pristine national park at the southern tip provides the ultimate island escape.
Accommodation ranges from backpacker digs to upscale resorts like Pimalai Resort, which boasts lavish rooms, spa villas, and one of Asia’s most stunning infinity pools. Despite its development, Koh Lanta retains a laidback, rural charm with fishing villages, rice paddies, and friendly locals going about their daily lives. This diverse island truly has something for everyone, from adventurous treks into untouched rainforest to unwinding at your own private slice of beach paradise. Koh Lanta is the quintessential Thai island getaway.
How to Get There: The most common way to reach Koh Lanta is by ferry or speedboat from the mainland. There are ferries that run from both Krabi and Phuket to Koh Lanta several times per day. The ferry from Krabi takes around 2 hours while the ferry from Phuket is closer to 3 hours.
You can also take a speedboat from these locations which cuts the travel time in half but costs a bit more. Speedboats typically run from Ao Nang, Klong Muang, or Rassada Pier in Phuket.
Some other arrival options include:
- Fly into Krabi Airport and then transfer to a ferry terminal for the boat to Koh Lanta. This is the fastest route.
- Take a minibus from Krabi town to Koh Lanta Ferry Pier. The bus ride takes 1.5 hours.
- Hire a private longtail boat from nearby islands like Koh Phi Phi or Koh Jum to shuttle you over to Koh Lanta’s piers.
- Arrange a private speedboat charter from Phuket, Krabi, or Ao Nang to reach any beach on Koh Lanta. This is the priciest but most convenient way to arrive.
No matter how you arrive, Koh Lanta’s ferry and speedboat connections make it easy to access this Thai island paradise. Just hop aboard a boat, lay back, and enjoy the ride to this tropical gem.
Koh Phayam – Rustic Island Life
Sitting quietly between the tourist hubs of Ranong and Phuket, Koh Phayam remains an undiscovered island paradise reminiscent of old Thailand. With just 500 residents and no cars, Koh Phayam provides a tranquil beach escape for those looking to unplug.
The main draw is the island’s two expansive beaches – Ao Yai and Ao Khao Kwai. Palm-fringed and washed in gleaming white sand, these beaches see only a handful of travelers. Spend your days swinging in a hammock beneath swaying casuarinas or strolling the powdery shores while beachcombers search for seashells in the tide.
With limited development, Koh Phayam offers a back-to-basics island experience. Dine on fresh seafood at small beach shacks, explore by bicycle or motorbike, and sleep in rustic bamboo bungalows listening to the sounds of the sea. For the ultimate island adventure, try jungle trekking, sea kayaking, or learning Thai massage.
How to Get There: Catch a flight or bus to Ranong, then take a 30-40 minute speedboat or 2 hour longtail boat to Koh Phayam.
Koh Bulon Leh – Island Castaway Vibes
Dreaming of being a castaway on a deserted tropical island? Find your bliss on tiny Koh Bulon Leh in Thailand’s deep south. With just three small beach resorts and a population of sea gypsies, Koh Bulon Leh remains an untouched island paradise.
This petite 2 sq km island impresses with its crystal clear turquoise waters, swaying coconut palms, and swathes of powdery white sand. You won’t find flashy resorts or rowdy backpacker bars, just a Robinson Crusoe simplicity.
Spend your days beachcombing, snorkeling the reefs, and soaking up the laidback ambience. Fall asleep in an open-air bamboo hut to a symphony of lapping waves and rustling palms. Contentment comes easy on this idyllic island.
How to Get There: Take a ferry from Pak Bara to Koh Bulon Leh during high season from November to April. The rest of the year, you’ll need to hire a private longtail boat.
Koh Kradan – Picture Perfect Paradise
Of Thailand’s countless dreamy islands, Koh Kradan stands out for its postcard-worthy beauty. Located off the coast of Trang Province, this small protected island dazzles with powder soft beaches, bathtub-warm water, and lush tropical jungle.
Paradise Beach stretches along the west coast with talcum-like sand and calm turquoise waters perfect for swimming and kayaking. Inland, hiking trails wind through shady forest filled with macaques, hornbills, and monitor lizards. The reef just offshore offers excellent snorkeling and scuba diving.
With no roads or villages, Koh Kradan caters to the Robinson Crusoe castaway fantasy. Fall asleep in your beachfront bungalow to the gentle sounds of lapping waves. Spend lazy days swinging in a hammock under rustling palms with not another soul in sight.
How to Get There: Catch a ferry from Trang or boat transfer from the piers at Koh Lanta, Koh Phi Phi, or Phuket.
Koh Ngai – Beach Bungalow Bliss
Another stunner in the Trang Islands, Koh Ngai dazzles with its turquoise bays, jungle-clad interior, and surrounding karst formations. With just a handful of beach resorts and few visitors, Koh Ngai provides a relaxing escape amid gorgeous tropical scenery.
The island’s most famous beach, Thong Nai Pan Noi, lives up to the hype with its swooping bay of powdery white sand and calm emerald waters. Swaying palms provide shade, with a fringe of jungle as the backdrop. Other pretty beaches ring the coastline, offering even more seclusion.
Beach bungalows like those at Koh Ngai Cottage or Thanya Beach Resort put you right on the sand to enjoy mesmerizing sea views. Dine on fresh grilled fish, sink your toes into the soft sand, and experienceisland life at its most scenic and serene.
How to Get There: Reach Koh Ngai via ferry/speedboat from Pak Meng, Koh Lanta, or Koh Lipe.
Koh Kood – Thailand’s Hidden Gem
Despite dazzling beaches rivaling the Maldives, lush tropical forests, and quality resorts, Koh Kood remains surprisingly undiscovered. Thailand’s fourth largest island lies just off the Cambodian coast in the Gulf of Thailand. With so few visitors, its long swathes of white sand and jungle-filled interior feel like your own private paradise island.
Must-see beaches include Ao Phrao, with its gorgeous sunsets and nearby waterfall, and Ao Tapao, which offers kayaking through the mangroves. Inland, you’ll find secret waterfalls and walking trails winding through untouched jungle.
Relax in a beachfront bungalow or exclusive pool villa at one of Koh Kood’s boutique resorts. Spend your days beach-hopping, swimming, and reveling in the island’s unspoiled natural beauty before toasting the sunset with a tropical cocktail in hand.
How to Get There: Ferries run to Koh Kood from Laem Sok pier south of Trat. You can also sail from nearby islands like Koh Chang or Koh Mak.
Koh Tarutao – Pristine National Park Island
Part of an unspoiled marine national park, Koh Tarutao offers a wilderness island escape reminiscent of old Thailand. Located in Thailand’s deep south, this large rugged island has no major resorts nor crowds – just endless jungle, secluded beaches, and barefoot luxury.
Much of Koh Tarutao is protected rainforest filled with wildlife like langurs, hornbills, and monitor lizards. Quiet sandy beaches like Ao Son and Ao Pante Malacca provide places to swim, snorkel, and soak up the island vibes. For more activity, go sea kayaking,mountain biking, or try a diving excursion.
With just a small national park village and basic bungalows, Koh Tarutao provides a back-to-nature experience focused on enjoying the island’s natural gifts. Escape here for the ultimate Thai island paradise devoid of mass tourism.
How to Get There: Ferries run from Pak Bara and Koh Lipe in high season from November to May.
Ko Muk – Thailand’s Mystical Island Escape
With its beguiling Emerald Cave, crystalline waters, and laidback castaway vibe, Ko Muk provides an enchanting Thai island getaway. Swim through the mystical submerged tunnel into a hidden beach surrounded by towering cliffs and shimmering pools of emerald. Linger along the soft white shores, snorkel through kaleidoscopic reefs, and retreat into the shade of soaring palms. Just a short hop from busier Krabi and Koh Lanta, Ko Muk offers a serene escape amid exquisite natural beauty. Lose yourself in this island paradise away from the crowds.
Scattered across the island sit small beachfront bungalow resorts like Sivalai Beach Resort, set on a private cove, and Muk Lanta Resort with its scenic views. Visitors spend their days snorkeling through vibrant reefs, kayaking into hidden lagoons, and exploring the winding jungle trails that reveal scenic views of the karst-studded shoreline. The island has a sleepy, castaway feel with limited development, allowing tourists to easily find serene spots to relax. Whether swimming through an enchanting emerald cave or strolling the talcum powder beaches at sunset, Ko Muk is a tropical island gem waiting to be discovered.
Koh Wai – Paradise Island
Known for its crystal clear waters in glowing shades of emerald and turquoise, Koh Wai stuns with its raw natural beauty. Just 15 minutes by longtail boat from busy Phuket, this island paradise feels far removed from the tourist scene.
Koh Wai impresses with its powdery white sand beaches fringed by coconut palms and surrounded by jungle-cloaked limestone formations jutting from the sea. Ao Manao Beach offers great swimming and snorkeling opportunities. Inside imposing Tham Lot Cave, you can view ancient paintings and sprawling chambers.
With limited development, Koh Wai provides a peaceful escape and chance to connect with nature. Dine on grilled fish, read a book under the palms, and admire magical sunsets far from the crowds.
How to Get There: Catch a longtail boat from Laem Ma Nam Pier on Phuket’s east coast.
Koh Kradan – Pristine Island Beauty
Encircled by an emerald bay and bleach white shores, Koh Kradan looks like it belongs in a glossy travel magazine. Located off Thailand’s Andaman Coast in Trang Province, Koh Kradan dazzles with its picture perfect scenery and welcoming laidback vibe.
Paradise Beach stretches for over 1500 meters on the west coast, offering swimming and kayaking in glass-like waters. The reef just offshore provides excellent snorkeling and diving opportunities. Jungle-covered hills dominate the interior, with hiking trails leading to vistas and secluded corners.
With just a small fishing village and smattering of beach bungalows, Koh Kradan offers a tranquil natural escape. Spend days beach-hopping, snorkeling, and shedding stress in this island paradise.
How to Get There: Arrive via ferry/boat from Pak Meng, Koh Lipe, Koh Muk, or Koh Lanta.
Koh Phaluai – Diving Paradise
Sitting between the dive hotspots of Ko Tao and Koh Lipe, Koh Phaluai has become a scuba diver’s dream destination. This small protected island offers spectacular reef diving and a chilled atmosphere.
Dazzling coral gardens, drift diving, vertical walls, and whale shark sightings are just part of the underwater bounty. Topside, sea eagles and hornbills soar above thick jungle bisected by walking trails. Simple thatched bamboo bungalows line the beaches for an affordable island stay.
With just one dive resort and handful of seasonal beach huts, Koh Phaluai provides a tranquil island escape. Spend mornings underwater with the fish, and afternoons lounging in the hammock watching coconut palms sway.
How to Get There: Arrive by boat from Koh Lipe, Koh Lanta, or Pak Bara during high season from November to April.
Koh Yao Noi – Laidback Island Life
While nearby Krabi and Phuket pulge with tourists, mountainous Koh Yao Noi remains a low-key, rural island getaway. Between the limestone karsts and rubber tree plantations sit quiet villages, rice fields, and pristine beaches prime for swimming, snorkeling, and serenity.
Must-see beaches like gorgeous Hat Pasai offer powdery sand and calm shallow waters. Outfitters like Eco Island Tours provide opportunities for rock climbing, kayaking, and hiking to secret viewpoints. And island homestays give a taste of authentic island culture.
With an unhurried pace and friendly locals, Koh Yao Noi is ideal for a relaxing Thai island retreat. Savor the slow rhythms of rural island life far from the crowds.
How to Get There: Reach Koh Yao Noi by public ferry from Krabi, Phuket, or Ao Nang.
Koh Si Chang – Yesteryear Charm
Within sight of Bangkok but worlds away in atmosphere, Koh Si Chang charms with its old-fashioned Thai island vibes. Motorized vehicles are banned here, so get around by foot, bicycle, or samlors pushed by smiling local drivers.
Chinese temples, pristine beaches, and seafood restaurants line the east coast. To the west, palm groves shrouded in hillside jungle provide tropical tranquility. Exploring by kayak reveals hidden coves and lagoons waiting to be discovered.
With no high-rise resorts or package crowds, Koh Si Chang offers an authentic island experience. Its yesteryear charm evokes Thailand long before mass tourism arrived. Couples, families, and solitude seekers will feel at home in this island gem.
How to Get There: Catch a ferry to Koh Si Chang just 1 hour from Bangkok’s Sathorn Pier.
Koh Kut – Rainforest Island Beauty
Thailand’s easternmost island, Koh Kut remains an unspoiled natural paradise waiting to be discovered. With crystal clear waters, secluded beaches, and lush rainforest interior, Koh Kut makes an idyllic island escape or base for diving and snorkeling ventures.
Must-visit beaches include Ao Phrao and its gorgeous sunsets, Ao Noi’s family-friendly shallow waters, and Ao Prao with its lovely crescent bay. The inland jungle rewards nature lovers with waterfalls and walking trails shaded by soaring canopy trees.
Boutique resorts like Soneva Kiri and Siam Beach Resort provide luxurious island accommodations without big crowds. Treat yourself to massage, fresh seafood, and swimming in this island gem.
How to Get There: Reach Koh Kut by ferry from Laem Sok Pier just south of Trat.
Koh Rok Nok – Island Arcadia
Koh Rok Nok stuns with its powdery white sand beaches and sheltered turquoise lagoon reminiscent of a South Pacific paradise. Part of Mu Koh Lanta National Park located south of Koh Lanta, this gorgeous island rewards travelers who take the time to reach it.
Must-see beaches include the arc of Ao Man Sai, Ao Chew Larn with its gorgeous lagoon, and crescent-shaped Ao Sai Deng. Stop by the small pier shops selling fresh grilled seafood. Finally, don’t miss snorkeling the colorful reefs that encircle the island.
With just a few restaurants and tents for rent, Koh Rok Nok caters to those seeking natural beauty and seclusion. Spend sunny days beach-hopping, swimming, reading in the hammock, and reveling in island life at its most scenic.
How to Get There: Reach Koh Rok by longtail boat or tour operators from Koh Lanta during high season between October and May.
Koh Mak – Thailand’s Perfect Island
Fondly called “Thailand’s Perfect Island,” Koh Mak charms with its swaying palms, sleepy ambience, and long stretches of sandy beach. Located between Bangkok and Cambodia in the Gulf of Thailand, Koh Mak offers tropical beauty away from the crowds.
Palm-fringed beaches like Ao Kao and Ao Suan Yai provide classic island relaxation, with beach bungalows and hammocks galore. Explore by bicycle or kayak and experience rural Thailand at its friendliest. Don’t miss viewing the island’s famous bioluminescent plankton on a night kayaking tour.
While Koh Mak has developed into an island destination, it retains its relaxed vibe and natural appeal. Spend days unwinding on the beach, eating fresh grilled fish, and soaking up the island tranquility.
How to Get There: Ferries run to Koh Mak from Trat mainland, with speedboat connections from nearby Koh Chang and Koh Kood.
- Koh Phayam – Back to basics charms with long empty beaches, jungle treks, mangroves.
- Koh Bulon Leh – Barely inhabited island with just a few resorts and sea gypsies.
- Koh Ngai – Turquoise bays, lush interior, beachfront bungalows.
- Koh Tarutao – Rugged national park island with protected rainforest.
- Koh Mak – Swaying palms, sleepy pace, and tropical beauty without crowds.
- Koh Kradan – Picture perfect beaches, snorkeling, and a peaceful vibe.
- Koh Yao Noi – Laidback rural island life with friendly locals.
- Koh Kut – Pristine rainforest island beauty and secluded beaches.
Thailand overflows with island possibilities, but bypass the crowds and discover paradise found on these 15 hidden gems scattered across the Andaman Sea and Gulf of Thailand. With untouched beaches, unhurried vibes, and unspoiled tropical scenery, find your own secret island escape far from the tourist trail.