12 Best Islands in Thailand : Your Complete Travel Guide

• The Andaman Sea islands are at their sunniest during November-April; the Gulf of Thailand islands during May-September.
• All the islands can cater to a particular mood – party, diving, romance, family, or solitude.
• Some islands are closed at times due to conservation, such as the Similans and Maya Bay.
• Island hopping is easy when the islands are clumped together.
• Making the perfect choice of an island will make all the difference in the trip.

Koh Tao is one of the top diving destinations in Thailand. Compared to other islands, it provides the best diving experience in Thailand at a low cost. If you’re fond of experiencing new things, this is one of the best islands in Thailand to visit.

• Best for: Diving, backpackers, eco-travellers
• When to go: November–April (best visibility)

This is the biggest island of Thailand, renowned for its beaches, culture, nightlife, and now luxury wellness resorts for 2025. It houses some of the best night markets in Thailand, ideal for shopping and street food. This place is great for first-timers wanting a bit of everything. You must explore Phuket attractions like Old Town’s street art and the Big Buddha viewpoint. 

• Best for: First-timers, nightlife lovers, families
• When to go: November–April for sun; May–October for cheaper stays

Renowned for its Full Moon Party, Koh Pha Ngan is among the best islands for partygoers. From hidden waterfalls to peaceful yoga retreats and beautiful beaches, there is much more to explore in Koh Pha Ngan. 

• Best for: Party-goers, wellness travellers
• When to go: December–March for sunny days

Koh Samui is a favourite among honeymooners and families because it has some of the best beaches, classy resorts, and natural beauty. From palm-fringed shores to lush tropical hills, the island is the perfect mix of relaxation and adventure. It’s well connected with Samui International Airport (USM), making it easy for short getaways. 

• Best for: Couples, families, spa lovers
• When to go: January–April (dry and sunny)

Koh Lipe is often called the “Maldives of Thailand” because of its crystal-clear turquoise waters, powdery white beaches, and vibrant coral reefs. This small, laid-back island is one of the perfect destinations in Thailand for couples seeking a romantic escape away from the crowds. 

• Best for: Honeymoons, snorkelling, romance
• When to go: November–March for best clarity

This is the most photographed place in Thailand, known for its tall limestone and turquoise water. Located in the Andaman Sea, this group of islands offers unforgettable scenery and a wide range of activities for every type of traveller. While Phi Phi Don is known for its vibrant nightlife, Phi Phi Leh is an area with access limitations.

• Best for: Backpackers, nightlife lovers, day trips
• When to go: November–April

Located in the pristine Andaman Sea, this island is well-known throughout the world. This nine-island group, which is a part of the Mu Ko Similan National Park, is well-known for its rich marine life, colourful coral reefs, and amazing underwater biodiversity.

• Best for: Advanced divers, nature lovers
• When to go: Open only November–April
   

It is the perfect island getaway for travellers looking to escape the hustle and bustle of Bangkok. Koh Samet is just a few hours’ drive and a short ferry ride from the capital. This small but charming island offers a mix of tranquil beaches and lively spots, making it ideal for a quick weekend escape.

• Best for: Short trips, city escapes
• When to go: October–May

If you are in search of a cosy, relaxed place away from busy crowds, then consider Koh Lanta. Known for its long, quiet beaches and family-friendly resorts, it offers plenty of space to unwind at your own pace. Snorkelling, kayaking, and village tours make it ideal for families, while couples and solo travellers enjoy its calm charm and sunsets.

• Best for: Families, couples, slow travellers
• When to go: December–April

Experience authentic Thai culture on this island. Tucked between Phuket and Krabi, Koh Yao Yai is a peaceful island that remains refreshingly untouched by mass tourism. Here, you’ll find quiet fishing villages, lush rice fields, coconut plantations, and a slower pace of life that feels worlds away from the busy tourist hubs nearby. 

• Best for: Cultural explorers, couples
• When to go: December–March

This hidden eco-friendly island lies in the Trat province. Riding a bike along the coconut plantations and exploring the less crowded sandbars makes you feel that you are on an isolated island.

• Best for: Eco-travellers, couples
• When to go: November–March

Koh Chang is the second-largest island in Thailand. It is ideal for adventure lovers who enjoy trekking and hiking to waterfalls. For tourists, a day at Santhiya Tree Resort on this island combines cosiness and is one of the best hotels in Thailand. 

• Best for: Adventure seekers, backpackers
• When to go: November–March

From diving in Koh Tao to sunsets in Koh Lipe, each island tells its own story. The best islands in Thailand are about finding the one that matches your dream trip. Enjoy with family and friends, create a happy memories album and enjoy to the fullest. Stop dreaming now! Plan your trip with Pickyourtrail by discovering the best Thailand tour packages for an effortless and hassle-free trip.