Last updated: October 2026
Thailand’s islands are some of the most famous in the world, with white sand beaches, turquoise water, limestone cliffs and coral reefs, plus great food and friendly island culture.
The islands sit on two coasts with different weather patterns: the Andaman Sea on the west and the Gulf of Thailand on the east. Picking the right coast for your travel dates makes a big difference.
This guide covers the top 10 Thai islands, from party hotspots to peaceful hideaways. The Tourism Authority of Thailand website has up-to-date travel and entry information.
Quick answer: What are the best Thai islands? Our top 10 are Koh Phi Phi, Koh Lanta, Phuket, Koh Yao Noi, Koh Lipe, Koh Samui, Koh Phangan, Koh Tao, Koh Kood and Koh Chang. Koh Phi Phi for scenery, Koh Lanta for families, Koh Lipe for snorkelling, Koh Samui for comfort and Koh Tao for diving. Visit the Andaman islands from November to April and the Gulf islands from January to August.
Top 10 Thai Islands at a Glance
| # | Destination | Best for |
|---|---|---|
| 1 | Koh Phi Phi | Scenery and nightlife |
| 2 | Koh Lanta | Families and relaxing |
| 3 | Phuket | Convenience and day trips |
| 4 | Koh Yao Noi | Peace and authentic island life |
| 5 | Koh Lipe | Snorkelling and beaches |
| 6 | Koh Samui | Comfort and couples |
| 7 | Koh Phangan | Parties and wellness retreats |
| 8 | Koh Tao | Diving and snorkelling |
| 9 | Koh Kood | Quiet nature |
| 10 | Koh Chang | Easy access from Bangkok |
1. Koh Phi Phi
Koh Phi Phi is Thailand’s most famous island group, known for dramatic limestone cliffs rising from turquoise water. Phi Phi Don is the main inhabited island, with a lively village, beach bars and viewpoints.
Day trips run to Maya Bay on Phi Phi Leh, made famous by the film The Beach. After years of overtourism, it was closed to let the reefs recover and reopened with strict limits, including a ban on swimming in the bay. Climb to the Phi Phi Viewpoint for the classic view of the twin bays.
Coast: Andaman. Best for: scenery and nightlife.
2. Koh Lanta
Koh Lanta is a long, laid-back island with wide sandy beaches and a relaxed atmosphere. It’s especially popular with families and couples.
The west coast is lined with beaches facing the sunset, from busy Long Beach to quiet Kantiang Bay. The Old Town on the east coast has wooden stilt houses and seafood restaurants. Mu Ko Lanta National Park at the southern tip has a lighthouse and jungle trails.
Coast: Andaman. Best for: families and relaxing.
3. Phuket
Phuket is Thailand’s largest island and the easiest to reach, with an international airport and a huge range of hotels. It’s not a quiet island escape, but it offers convenience and variety.
Patong is busy and loud, while Kata, Karon and Kamala are calmer. Explore Phuket Old Town, with its colourful Sino-Portuguese shophouses, and visit the Big Buddha for views. Phuket is a great jumping-off point for boat trips to Phang Nga Bay and the Phi Phi Islands.
Coast: Andaman. Best for: convenience and day trips.
4. Koh Yao Noi
Koh Yao Noi sits in the middle of Phang Nga Bay, surrounded by towering limestone karsts. It’s a rural, mostly Muslim island where life revolves around fishing, rubber plantations and rice fields.
It’s quiet, with no big resorts or nightlife, which is exactly why people love it. Kayak among the karsts, cycle through villages and enjoy sunsets over the bay. It’s a short boat ride from both Phuket and Krabi.
Coast: Andaman. Best for: peace and authentic island life.
5. Koh Lipe
Koh Lipe is a small island near the Malaysian border, with powdery white sand and some of the clearest water in Thailand. It sits within Tarutao National Marine Park.
You can walk across the island in around 20 minutes. Snorkelling straight off the beach is excellent, and long-tail boats take you to nearby uninhabited islands. Getting there takes time, but that keeps it special.
Coast: Andaman. Best for: snorkelling and beaches.
6. Koh Samui
Koh Samui is the largest island in the Gulf of Thailand, with an airport, luxury resorts and a good mix of beaches. It’s well suited to couples and travellers who want comfort.
Chaweng is lively, while Lamai, Bophut and Maenam are quieter. Visit the Big Buddha temple, the Fisherman’s Village night market in Bophut and the Ang Thong National Marine Park, an archipelago of 40 or so islands for kayaking and snorkelling.
Coast: Gulf. Best for: comfort and couples.
7. Koh Phangan
Koh Phangan is world famous for its Full Moon Party, held on Haad Rin beach each month, when thousands of travellers dance until sunrise.
But there’s more to the island than parties. The north and west coasts have quiet beaches, yoga retreats and jungle waterfalls. Bottle Beach, reached by boat or a steep hike, is one of the most peaceful spots in the Gulf.
Coast: Gulf. Best for: parties and wellness retreats.
8. Koh Tao
Koh Tao is one of the most popular places in the world to learn to dive, with dozens of dive schools and affordable courses.
The island is small and rugged, with rocky coves and coral reefs close to shore. Most schools teach courses certified by PADI, the world’s largest diving training organisation. Hike to the John-Suwan Viewpoint and take a boat to Koh Nang Yuan, three tiny islands joined by a sandbar.
Coast: Gulf. Best for: diving and snorkelling.
9. Koh Kood
Koh Kood is a quiet, jungle-covered island near the Cambodian border, with clear water and very little development. It’s one of the least visited islands on this list.
Its beaches, like Klong Chao and Ao Tapao, are calm and beautiful, and inland waterfalls are great for a cool swim. Resorts are spread out, so it’s ideal for a peaceful retreat.
Coast: Eastern Gulf. Best for: quiet nature.
10. Koh Chang
Koh Chang is Thailand’s third-largest island, covered in mountainous rainforest and fringed with long beaches. It’s within reach of Bangkok by road and ferry.
White Sand Beach is the main stretch, with plenty of hotels and bars. Head south for quieter spots like Lonely Beach and the fishing village of Bang Bao, built on stilts over the water. Trekking to inland waterfalls is a highlight.
Coast: Eastern Gulf. Best for: easy access from Bangkok.
When Is the Best Time to Visit the Thai Islands?
The Andaman Coast (Phi Phi, Lanta, Phuket, Lipe, Yao Noi) is best from November to April, when the sea is calm and the sky is clear. From May to October, it’s monsoon season, with rough seas and some ferries suspended.
The Gulf of Thailand (Samui, Phangan, Tao) is best from January to August. Its main rainy season usually runs from October to December.
Koh Chang and Koh Kood are best from November to April.
Thailand is one of our top winter sun destinations, alongside the Canaries, Cape Verde and the Caribbean.
What Should You Know Before Island Hopping in Thailand?
Stick to one coast. Moving between the Andaman Sea and the Gulf takes most of a day.
Book ferries in peak season. Popular routes fill up around Christmas, New Year and Chinese New Year.
Pack light. Ferries, speedboats and long-tail boats have limited luggage space, and you’ll often wade ashore. A soft bag or backpack is far easier than a hard suitcase.
Respect marine parks. Don’t touch coral, use reef-safe sun cream and pay national park fees when asked.
Dress modestly in villages and temples. Cover shoulders and knees when away from the beach.
Carry cash. Smaller islands have limited ATMs.
Frequently Asked Questions
Which Thai island is best for first-timers?
Koh Lanta and Koh Samui are great for first visits, with good facilities and a relaxed pace.
Which Thai island has the best beaches?
Koh Lipe and Koh Phi Phi are often rated for the clearest water and most dramatic beaches.
How many islands can you visit in two weeks?
Three or four islands on one coast is a comfortable pace for two weeks.
Find Your Perfect Thai Island
Pick your coast based on your travel dates, then mix a busy island with a quiet one. That way you get the best of Thailand’s island life.
Exploring more of Southeast Asia? Vietnam’s islands and coast make a good next stop: try the best things to do on Phu Quoc, Da Nang’s best beaches, or one of our Vietnam itineraries for 7 to 14 days.
Featured image: Photo by Ivan Nedelchev on Unsplash
