Looking for the best things to do on Ko Samui? Thailand's second largest island in the Gulf of Thailand is one of the country's most popular tropical destinations – known for its palm-fringed beaches, luxury resorts, jungle waterfalls and vibrant nightlife.

Koh Samui offers the perfect blend of relaxation and adventure, whether you're looking for beach days, cultural attractions, or island-hopping tours. From famous temples and hidden waterfalls to vibrant night markets, there's something for every traveler.

Here are the 10 best things to do on Ko Samui.

1. Visit the Great Buddha (Wat Phra Yai)

The Great Buddha Temple (Wat Phra Yai) is the most famous landmark on Ko Samui. Built in 1972, the temple houses an imposing, 12-meter-high golden Buddha statue overlooking the sea.

Located on a small island accessible via a causeway, it remains an important spiritual site for the locals. Visitors can climb the stairs and enjoy the panoramic view while participating in traditional Thai Buddhist rituals.

2. Take a day trip to Ang Thong National Marine Park

One of the most beautiful activities on Ko Samui is a boat trip to Ang Thong National Marine Park, a breathtaking archipelago of 42 islands.

Here you can discover emerald-green lagoons, imposing limestone cliffs, and hidden beaches. Many tours also include snorkeling, kayaking, and hikes to viewpoints with panoramic views, making the region an unforgettable experience in the Gulf of Thailand.

3. Relax on the most beautiful beaches of Koh Samui

Ko Samui is famous for its diverse beaches, each offering a different atmosphere.

Chaweng Beach is the busiest and most developed stretch of beach on the island, known for its restaurants, bars, and vibrant nightlife. Lamai Beach offers a more relaxed atmosphere while still providing numerous amenities. Those seeking a quieter and more tranquil experience will find Maenam Beach ideal, especially for couples and those looking for peace and quiet. A visit to the beach is simply a must for any holiday on Koh Samui.

4. Explore the Na Muang Waterfalls

Escape the coastal heat by heading inland to the Na Muang Waterfalls, located in the island's lush jungle.

Na Muang 1 is easily accessible and a popular beach spot, while Na Muang 2 requires a short but rewarding uphill hike. The surrounding jungle scenery makes this place one of the most beautiful natural attractions on Koh Samui.

5. Visit Wat Plai Laem

Wat Plai Laem is one of the most visually impressive temples on Ko Samui and houses a huge statue of the 18-armed Guanyin, the goddess of mercy.

The temple complex is situated on a lake and surrounded by colorful sculptures and intricate details. It offers insights into Thai-Chinese cultural influences and forms a contemporary contrast to the Great Buddha Temple.

6. Discover the secret Buddha garden

Hidden in the hills of Ko Samui lies the Secret Buddha Garden – also known as the Magic Garden – which was created in 1976 by a local farmer.

The garden houses a collection of Buddha statues, mythological figures, and stone carvings, nestled amidst lush greenery and small waterfalls. Thanks to its elevated position, it also offers cooler temperatures and picturesque views across the island.

7. Visit the fishing village and the pedestrian zone.

The fishing village located in Bophut is one of the most charming and atmospheric areas of Ko Samui.

During the day, visitors can enjoy boutiques, beach cafes, and relaxed restaurants. In the evenings, especially on Fridays, the area transforms into a lively market with street food, live music, and stalls selling handicrafts and souvenirs.

8. Visit the Hin Ta and Hin Yai rocks.

Hin Ta and Hin Yai, also known as Grandfather and Grandmother Rocks, are among the most unusual sights of Ko Samui.

Located near Lamai Beach, these natural rock formations have been sculpted by erosion into shapes resembling male and female anatomy. They have become a popular photo subject and a quirky cultural landmark.

9. Experience the night markets of Ko Samui

The night markets are a highlight of any visit to Ko Samui, offering a vibrant mix of food, shopping, and entertainment.

Popular markets can be found in Chaweng, Lamai, and the fishing village. Visitors can enjoy freshly prepared street food, seafood, and cocktails, as well as browse stalls selling clothing, accessories, and souvenirs – all in a lively open-air setting.

10. Try snorkeling or diving around Ko Samui

Ko Samui is an excellent starting point to explore the underwater world of the Gulf of Thailand.

Visitors can take snorkeling trips to nearby islands or go diving to Ko Tao, which is known for its clear waters and diverse marine life. These experiences offer the opportunity to observe coral reefs, tropical fish, and other marine creatures, making them an absolute highlight for all ocean lovers.

Arrival in Ko Samui

Ko Samui is located off the east coast of Thailand and can be reached by plane and ferry.

The easiest way to reach the island is by plane from Bangkok to Samui International Airport. The flight time is approximately one hour. Alternatively, travelers can take a train or bus from Bangkok to Surat Thani and then a ferry to the island. Combined bus and ferry tickets are widely available and a more economical option, but the journey typically takes between 10 and 12 hours.

Whether you want to explore temples, marvel at waterfalls or relax on pristine beaches, Ko Samui offers one of Thailand's most comprehensive island experiences – a combination of natural beauty, culture and comfort in a single destination.