15 Best Islands in Thailand : Choose Your Favourite Island to Hop

Koh Tao, also known as Turtle Island, is a haven for scuba divers and snorkelers. It is one of the top islands in Thailand that boasts crystal-clear waters, vibrant coral reefs, and an abundance of marine life. With a laid-back atmosphere and beautiful sandy beaches, it's no wonder that Koh Tao is a favorite among travelers looking to unwind.

Highlights of Koh Tao

• Excellent diving and snorkeling sites
• White sand beaches
• Vibrant marine life
• Chilled-out atmosphere
• Stunning viewpoints

Best Time to Visit: November to April

Embark on a Thai adventure with a myriad of things to do in Thailand for couples, from exploring ancient temples and vibrant markets to indulging in water activities and savoring the diverse flavors of Thai cuisine.

Suggested Read: Best Caves to Visit in Thailand

Phuket is Thailand's largest island and a must-visit destination for any traveler in Southern Thailand. Known for its vibrant town, diverse culture, and mouthwatering cuisine, Phuket has developed into an internationally renowned holiday destination. Boasting some of the finest beaches in Thailand, Phuket offers a range of activities, from water sports to luxurious spa experiences.

Highlights of Phuket

• Gorgeous beaches such as Patong, Kata, and Karon
• Engaging cultural attractions like Old Phuket Town
• Diverse range of water sports activities 
• Relaxing spas and wellness retreats

Best time to visit: November to February

Famed for its legendary Full Moon party, Ko Pha Ngan, the best island in Thailand, offers visitors a range of activities beyond its wild nightlife. Explore secluded waterfalls, hidden beaches, and lush jungles, or indulge in beachfront yoga and delectable local cuisine at one of the island's many restaurants.

Highlights of Ko Pha Ngan

• Full Moon Party
• Beautiful waterfalls
• Secluded beaches
• Beachside yoga classes
• Delicious local cuisine

Best Time to Visit: December to March

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As Thailand's second-largest island, Koh Samui strikes the perfect balance between luxury and natural beauty. With upscale resorts, pristine beaches, and lively night markets, it's an ideal destination for both relaxation and adventure-seekers. It is one of the top islands in Thailand that you should have on your Thailand vacation package.

Highlights of Koh Samui

• Luxury resorts
• Stunning beaches
• Busy night markets
• Spa experiences 
• Water sports opportunities

Best time to visit: December to August

Often referred to as the "Maldives of Thailand," Koh Lipe boasts powder-white sands and turquoise waters that make this tiny island a paradise for beach lovers. Being one of the best islands in Thailand, it is home to just a few streets lined with bars and restaurants. Koh Lipe remains relatively undeveloped but has all you need for an unforgettable vacation.

Highlights of Koh Lipe

• Pristine white sand beaches
• Clear, turquoise waters
• Variety of dining options
• Relaxed vibe
• Exceptional sunsets

Best Time to Visit: November to March

Choose the best time to travel to Thailand while exploration, with the cool, dry season from November to February offering pleasant weather and vibrant festivals, enhancing your overall experience.

The Phi Phi Islands have long been popular among tourists for their stunning limestone cliffs, postcard-perfect beaches, and vibrant coral reefs. Composed of two main islands, Phi Phi Don and Phi Phi Leh, this iconic destination is perfect for both adventure junkies and beach bums. You can include this best island in Thailand in your vacation package and get the most out of it.

Highlights of the Phi Phi Islands:

• Breathtaking limestone cliffs
• Gorgeous beaches
• Excellent snorkeling and diving
• Active nightlife on Phi Phi Don
• Visiting the famous Maya Bay

Best Time to Visit: November through April

The Similan Islands are a mesmerizing archipelago in the Andaman Sea known for their crystal-clear waters and vibrant marine life. Teeming with colorful coral reefs and unique rock formations, these best islands in Thailand offer some of the best diving and snorkeling experiences. The white, sandy beaches invite visitors to relax and soak up the tropical sun.

Highlights of the Similan Islands:

• World-class diving and snorkeling sites
• Stunning underwater scenery with coral reefs
• Pristine white sand beaches
• Beautiful turquoise waters

Best time to visit: December through January

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Ko Samet is a small, charming island situated near the eastern Gulf coast of Thailand. Often referred to as "Paradise Island," this top island in Thailand boasts a lush green jungle interior and powdery white sand beaches lining its shores. The relaxed atmosphere attracts sun-worshippers who enjoy swimming in the clear blue waters or lounging under palm trees swaying with gentle sea breezes.

Highlights of Koh Samet:

• Fine white sand beaches
• Vibrant nightlife scene along Hat Sai Kaew beach
• Numerous water sports activities
• Fire shows by local performers on the beach

Best Time to Visit: October to May

Ko Lanta is a serene island located along the southwestern coast of Thailand. With its laid-back atmosphere, long stretches of golden sandy beaches, and cozy beachside bungalows, Ko Lanta is perfect for visitors seeking a peaceful escape from daily life. The best Thailand island is rich in aquatic life, serving as an ideal spot for diving and snorkeling enthusiasts.

Highlights of Koh Lanta

• Tranquil, uncrowded beaches
• Excellent diving and snorkeling opportunities
• Explore the Lanta Old Town for a cultural experience
• Mu Ko Lanta National Park featuring diverse wildlife 

Best Time to Visit: December to April

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Ko Yao Yai, a hidden gem tucked between Phuket and Krabi in the Andaman Sea, offers an authentic, tranquil, and best Thai island experience. This unspoiled haven features lush mangrove forests, swaying palm trees, and deserted beaches. Enjoy a slow-paced lifestyle supported by friendly locals and indulge in freshly caught seafood while experiencing stunning sunsets.

Highlights of Ko Yao Yai:

• Secluded and tranquil beaches
• Traditional fishing community 
• Exquisite sunsets overlooking the sea
• Forested hills are perfect for hiking and exploring

Best Time to Visit: December through March

Ko Mak is a small, quiet island perfect for couples and families seeking a serene getaway. Lined with pristine white sand beaches and lush greenery, visitors can enjoy stunning sunsets and peaceful surroundings. With its laid-back atmosphere, there's no better place to unwind and embrace the beauty of nature than this best island in Thailand

Highlights of Ko Mak

• Beautiful white-sand beaches
• Relaxing and peaceful atmosphere
• Perfect for romance and family trips
• Stunning sunsets
• Abundant greenery

Best Time to Visit: November to March

Ko Kradan offers crystal-clear waters, making it an ideal destination for snorkeling and underwater adventures. The top Thailand island boasts long stretches of white sands, and visitors will find a variety of cozy beach resorts ready to cater to their every need. Embrace the picturesque beauty of Ko Kradan's coral reefs and diverse marine life.

Highlights of Koh Kradan

• Crystal-clear waters for snorkeling
• Idyllic white sand beaches
• Cozy beachfront resorts
• Picturesque coral reefs
• Diverse marine life

Best Time to Visit: December to March

Located in Trat Province, the Ko Chang District is home to Thailand's second-biggest island. It features an impressive combination of lush jungle landscapes and scenic beaches. Nature enthusiasts will relish exploring the national park, taking guided treks, or visiting waterfalls while enjoying the area's abundant wildlife.

Highlights of Ko Chang:

• Second-biggest island in Thailand
• Stunning beach scenery combined with lush jungles
• Mu Ko Chang National Park
• Guided treks and waterfall visits
• Rich wildlife opportunities

Best Time to Visit: November to March

A lesser-known gem in the Andaman Sea, Ko Phayam is a haven for wildlife enthusiasts and ecotourism buffs. This small yet charming and best island in Thailand offers unspoiled nature, uncrowded beaches, and opportunities to spot rare animals such as hornbills. Expect a laid-back experience with friendly locals on Ko Phayam.

Highlights of Koh Phayam

• Unspoiled natural beauty
• Uncrowded, pristine beaches
• Ecotourism and wildlife spotting opportunities
• Presence of rare hornbills
• Friendly local atmosphere

Best Time to Visit: November to April

Arguably one of the most famous islands in Thailand, Ko Phi Phi Don is a must-visit destination. This bustling hotspot is known for Maya Bay's mesmerizing views and vibrant party scene. Aside from water sports and nightlife, the island also offers impressive hiking trails leading to panoramic viewpoints.

Highlights of Koh Phi Phi Don:

• Mesmerizing views of Maya Bay
• Vibrant nightlife and party scene
• Variety of water sports activities
• Scenic hiking trails

Best Time to Visit: November through April