Best Beaches in Koh Samui (Including Secret Boat-Access Ones)

Koh Samui has beaches for every mood — from bustling strips with beach bars to deserted crescents of white sand you can only reach by boat. Most guides only cover the main beaches on Samui itself. We'll go further: as a local boat tour operator, we know the hidden gems on surrounding islands that most visitors never discover. Here's our complete, honest guide.

Quick Beach Guide

Famous Beaches on Koh Samui

Chaweng Beach — The Main Event

Koh Samui's longest and most popular beach stretches for 7 km along the east coast. Chaweng is where the action is — beach bars, restaurants, shopping, and nightlife are all steps from the sand. The water is warm and swimmable year-round, with a gentle slope that's good for wading.

The downside? Chaweng can feel crowded, especially during high season (December-March). Jet skis and longtail boats operate along the beach. If you want a quieter version, head to Chaweng Noi (the southern end) — same beautiful water, fewer people.

Lamai Beach — The Balanced Choice

Samui's second-largest beach is a favorite among travelers who want some nightlife without the Chaweng intensity. Lamai has a good mix of restaurants, bars, and massage shops along its beach road, but the sand itself feels more spacious. The water is excellent for swimming, and during the right season you can catch some waves.

At the southern end, don't miss the Hin Ta and Hin Yai rocks (Grandfather and Grandmother rocks) — a famous natural formation and one of Samui's most photographed landmarks.

Bophut — Fisherman's Village Charm

Bophut is our personal favorite for atmosphere. The Fisherman's Village is a charming strip of converted wooden shophouses now housing boutique restaurants, art galleries, and bars. The Friday night walking market is a must-do. The beach itself is narrow but beautiful, with calm water and views of Koh Phangan across the strait.

It's ideal for couples and food lovers. The sunset views from Bophut's beachfront restaurants are some of the best on the island.

Maenam Beach — The Quiet Star

Maenam is the beach we recommend most often to families. It's a long, peaceful stretch of sand on the north coast with shallow, calm water that's safe for young children. The atmosphere is distinctly local — you'll find more Thai restaurants than international chains, and accommodation ranges from budget bungalows to high-end resorts.

The west end of Maenam faces Koh Phangan, and on clear days the view is stunning. It's also the launch point for ferries to Koh Phangan and Koh Tao.

Lipa Noi — Sunset Coast

On the quieter west coast, Lipa Noi is the sunset beach. The water here is very shallow (you can wade out hundreds of meters), which limits swimming but creates an incredibly peaceful atmosphere. This is where you come for golden-hour drinks and total relaxation. Very few tourists find their way here.

Secret Boat-Access Beaches

Here's what most beach guides won't tell you: the most beautiful beaches near Koh Samui aren't on Koh Samui at all. They're on small surrounding islands, reachable only by longtail or speedboat. These are the spots we take our guests to every day — uncrowded, pristine, and unforgettable.

Koh Madsum (Pig Island) — Paradise with Wild Pigs

About 30 minutes by longtail from Samui's south coast, Koh Madsum is the island with the famous wild pigs. But beyond the pigs (which are genuinely delightful — they roam freely on the beach), the island has some of the cleanest white sand and clearest water in the area.

The main beach is a long crescent of soft sand with calm, shallow water — perfect for children. Coconut palms provide natural shade. There's a small beach bar, but the vibe is completely relaxed and uncrowded. Even in peak season, you'll share the beach with maybe 20-30 other visitors at most.

How to get there: Our Koh Tan & Pig Island tour includes Koh Madsum. Shared tour from 2,800 THB/person, or charter a private longtail for your group.

Koh Tan — Snorkeler's Paradise

Just south of Koh Madsum, Koh Tan has some of the best shallow-water snorkeling in the Samui area. The island has several small beaches along its western coast, each surrounded by coral reefs teeming with tropical fish. The water is crystal clear and usually very calm thanks to the island's sheltered position.

Koh Tan is barely developed — a handful of local families live here, and there are no hotels or resorts. You'll step onto a beach that looks like it hasn't changed in decades. The coral reef starts just meters from shore, making it accessible even for beginners.

How to get there: Included in our Koh Tan & Pig Island tour (2,800 THB/person). We spend time at both islands so you get the snorkeling and the pig beach in one trip.

Koh Rap — The Deserted Island

This is our personal favorite for guests who want a true "desert island" experience. Koh Rap is completely uninhabited. There are no structures, no vendors, no other tourists on most days. Just a beautiful curved beach, turquoise water, and tropical jungle behind.

Our Koh Rap BBQ tour takes you to this island for a day of swimming, snorkeling, and a freshly prepared BBQ lunch right on the beach. It's the closest thing to a castaway experience you'll find in Thailand. The snorkeling around the island is excellent, with healthy coral and abundant marine life.

How to get there: Our Koh Rap BBQ tour is 3,500 THB/person and includes lunch, snorkeling equipment, and the boat ride. This island is virtually impossible to reach without booking a tour.

Ang Thong Beaches — Wild and Spectacular

The Ang Thong Marine Park comprises 42 islands, and several of them have stunning small beaches accessible by kayak or boat. The most famous is the beach at Koh Wua Talap (the main island), where you can also hike to a viewpoint overlooking the entire archipelago. Other islands have hidden coves and tiny white-sand strips that feel completely untouched.

The emerald saltwater lake (Thale Nai) on Koh Mae Ko is arguably the park's most iconic sight — a collapsed cave system filled with vivid green water, surrounded by vertical limestone cliffs. It's one of the most photographed spots in all of Thailand.

How to get there: Our Ang Thong Marine Park tour is 4,400 THB/person and includes kayaking, hiking, snorkeling, and visiting multiple islands. Note: the park closes from November 1 to mid-December each year.

How to Choose Your Beach

Beach Tips from Locals

1. Don't stay only on your hotel beach. Many visitors never leave Chaweng. Rent a scooter (250-350 THB/day) and explore the quieter coasts. Lipa Noi for sunset, Maenam for morning calm.
2. Do at least one boat trip. The boat-access beaches are genuinely in a different league. A day on Koh Rap or Koh Madsum will be the highlight of your trip.
3. Mornings are best. Any beach on Samui is at its most beautiful before 10am — calm water, fewer people, softer light for photos.
4. Bring reef-safe sunscreen. The coral around Koh Tan and Koh Rap is healthy and beautiful — help keep it that way.
5. The south coast has hidden coves. Between Lamai and the southern tip, there are small rocky bays that few tourists visit. Ask locals or message us for exact locations.

Frequently Asked Questions