Looking for the best things to do in Ko Samui? Thailand’s second-largest island, located 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.
Ko Samui offers the perfect mix of relaxation and adventure, whether you’re here for beach days, cultural landmarks or island-hopping experiences. From iconic temples to hidden waterfalls and buzzing night markets, there’s something here for every type of traveller.
Here are the 10 best things to do in Ko Samui.
1. Visit the Big Buddha (Wat Phra Yai)
The Big Buddha Temple (Wat Phra Yai) is Ko Samui’s most famous landmark. Built in 1972, the temple features a towering 12-metre golden Buddha statue overlooking the sea.
Located on a small island connected by a causeway, it remains an important spiritual site for locals. Visitors can climb the staircase to enjoy panoramic views while experiencing traditional Thai Buddhist rituals.
2. Take a Day Trip to Ang Thong National Marine Park
One of the best things to do in Ko Samui is taking a boat trip to Ang Thong National Marine Park, a breathtaking archipelago made up of 42 islands.
Here, you can explore emerald lagoons, dramatic limestone cliffs and hidden beaches. Many tours also include snorkelling, kayaking and hikes to panoramic viewpoints, making it one of the most memorable experiences in the Gulf of Thailand.
3. Relax on Ko Samui’s Best Beaches
Ko Samui is famous for its diverse beaches, each offering a different atmosphere.
Chaweng Beach is the island’s busiest and most developed stretch, known for its restaurants, bars and nightlife. Lamai Beach offers a slightly more relaxed environment while still providing plenty of amenities. For a quieter and more laid-back experience, Maenam Beach is ideal, particularly for couples and those seeking tranquillity. Spending time on the beach is an essential part of any Ko Samui itinerary.
4. Explore Na Muang Waterfalls
Escape the coastal heat by heading inland to the Na Muang Waterfalls, located in the island’s lush jungle interior.
Na Muang 1 is easily accessible and popular for swimming, while Na Muang 2 requires a short but rewarding hike uphill. The surrounding jungle scenery makes this one of the most beautiful natural attractions on Ko Samui.
5. Visit Wat Plai Laem
Wat Plai Laem is one of the most visually striking temples on Ko Samui, featuring a giant statue of the 18-armed Guanyin, the Goddess of Mercy.
The temple complex sits on a lake and is surrounded by colourful sculptures and intricate details. It provides insight into Thai-Chinese cultural influences and offers a more contemporary contrast to the Big Buddha temple.
6. Discover the Secret Buddha Garden
Hidden in the hills of Ko Samui, the Secret Buddha Garden—also known as the Magic Garden—was created in 1976 by a local farmer.
The garden features a collection of Buddha statues, mythical figures and stone carvings set among lush greenery and small waterfalls. Its elevated location also offers cooler temperatures and scenic views across the island.
7. Visit Fisherman’s Village & Walking Street
Located in Bophut, Fisherman’s Village is one of Ko Samui’s most charming and atmospheric areas.
During the day, visitors can enjoy boutique shops, beachfront cafés and relaxed dining. In the evening, especially on Fridays, the area transforms into a lively Walking Street Market filled with street food, live music, and stalls selling crafts and souvenirs.
8. See Hin Ta & Hin Yai Rocks
Hin Ta and Hin Yai, also known as the Grandfather and Grandmother Rocks, are among Ko Samui’s most unusual attractions.
Located near Lamai Beach, these natural rock formations have been shaped by erosion into forms resembling male and female anatomy. They have become a popular photo stop and a quirky cultural landmark.
9. Experience Ko Samui’s Night Markets
Night markets are a highlight of visiting Ko Samui and offer a vibrant mix of food, shopping and entertainment.
Popular markets can be found in Chaweng, Lamai and Fisherman’s Village. Visitors can enjoy freshly cooked street food, seafood, cocktails, and browse stalls selling clothing, accessories and souvenirs, all within a lively open-air setting.
10. Try Snorkelling or Diving Around Ko Samui
Ko Samui is an excellent base for exploring the underwater world of the Gulf of Thailand.
Visitors can join snorkelling trips to nearby islands or take diving excursions to Ko Tao, which is known for its clear waters and abundant marine life. These experiences offer the chance to see coral reefs, tropical fish and other marine species, making them a highlight for ocean lovers.
Getting to Ko Samui
Ko Samui is located off Thailand’s east coast and is accessible by air and ferry.
The easiest way to reach the island is by flying from Bangkok to Samui International Airport, with flights taking around one hour. Alternatively, travellers can take a train or bus from Bangkok to Surat Thani and continue by ferry to the island. Combined bus and ferry tickets are widely available and provide a more budget-friendly option, although the journey typically takes between 10 and 12 hours.
Whether you’re exploring temples, chasing waterfalls or relaxing on pristine beaches, Ko Samui offers one of Thailand’s most complete island experiences — combining natural beauty, culture and comfort in one destination.