Koh Samui is Thailand’s easy-luxury island: direct flights into a boutique palm-roofed airport, a coastline of five-star resorts and private villas, and enough beaches, brunches and waterfalls to fill a week without ever feeling rushed. I’ve stayed here in a private villa, dived its most famous site and eaten my way through its Sunday-brunch institution — this guide covers what’s actually worth your time, through a luxury traveler’s eye.
The Best Things to Do in Koh Samui
- Claim your stretch of Chaweng or Lamai beach — Samui’s famous white sand
- Do a champagne Sunday brunch at a beachfront resort — the island institution
- Dive Sail Rock — the one Gulf of Thailand dive that genuinely impressed me
- Walk Bophut beach to the old Fisherman’s Village
- Visit the Big Buddha shrine on the northern coast
- Cool off at the Namuang waterfalls and their jumping rock
- Base yourself in a private villa — my Miskawaan review shows the standard
- Rent a car for a day and circle the island’s viewpoints
- Take a Thai cooking class or head out to the marine national park
Each of these is covered below, from my own visits.
Best Beaches in Koh Samui
Beaches are of course the top highlight of any trip to Koh Samui. Here are a few of the best:
Chaweng Beach
Chaweng is one of the main touristic areas in Samui. The beach here is one of the best beaches on the island. With a long white sandy beach and beautiful rocks, it is easy to see why tourists flock here.
Lamai Beach
Lamai is also a fantastic beach that features this white sand that Samui is famous for. Lamai is a great place to chill or go for a long walk. The boulder rocks make it great for taking pictures. There is also a wide array of water sports available.
Bophut Beach
The sand here is yellow, but what makes this beach attractive is the proximity of the old Fisherman’s Village. The beach covers several kilometres between Maenam and Bangrak and is also a great place to go for a long walk.
Sightseeing & Culture in Koh Samui
If you manage to extract yourself from your hotel or villa, there are many sightseeing activities. Renting a car for the day can be a good option. Below are my favorite activities in Samui.
Big Buddha Shrine
The Big Buddha shrine is a famous place on the island. It is on the northern coast of the island. It towers at 12 meters high. Beside the Big Buddha, you can also visit the temple that has many smaller Buddhas and shrines. There are also a few food stalls, so this could be a good stop option for lunch if you are after simple street food.
The Namuang Waterfalls
Samui being a lush tropical island, there are plenty of waterfalls to visit. Our favorites are the Namuang waterfalls. The first one is a short walk down to a fun jumping rock. The second one is a bit more challenging as you need to walk up. But you get rewarded with a beautiful viewpoint.
Other possible activities include visiting more beaches, jet skiing, kite surfing, the marine national park, eco safaris at Na Muang, and Thai cooking lessons.
The Sunday Brunch Ritual
Sunday brunches in Samui are an institution. Most large beachside restaurants provide large buffets with Thai and international delicacies. Champagne and alcohol packages are available at most places. Make sure you don’t have breakfast before going. And don’t plan too much for the rest of the afternoon as you might feel lazy after all this food and champagne. (Might also be better not to drive yourself if you plan to enjoy the Champagne 😊)
Diving from Koh Samui: Sail Rock
We did two days of diving at Sail Rock.
I dove in Thailand a few times before (Phuket, Similan Islands…) and had not been convinced. I find diving in the Philippines or Indonesia in general far superior. You can see my reviews of some of the best dive sites like Maumere, Bohol, Alor, Komodo or the Derawan Islands.
The dive at Sail Rock was, however, the exception. It was excellent diving with good visibility and many schools of fish. What makes this site unique besides the stunning topography is the large number of fish. Schools of barracudas, king mackerels, tuna, groupers, and the likes roam around.
You might also be lucky to see whale sharks. They are seen quite often, but we, unfortunately, didn’t see them.
Imagine a fifteen-meter granite pinnacle that comes out of the water. There is a hole in the middle that you can enter at 18 meters. You swim up that cave to 12 or 7 meters and are rewarded with the view of anemones and sunlight. Very scenic 😊
It was so good that we went for a second day at the same dive site. And we still didn’t see the whale shark… I guess that is our excuse to go back to Samui.
Where to Stay in Koh Samui for a Luxury Trip
Samui’s luxury scene splits two ways: the five-star resorts clustered around Chaweng, Bophut and the quieter north, and the private villas that, for groups and families, beat any hotel suite on space and privacy. I stayed on the south coast in a private villa and would make the same choice again — my Miskawaan Villa review covers exactly what that standard looks like. Rule of thumb: Chaweng for beach-and-buzz, Bophut for charm and restaurants, the south and west for the Samui that still feels like an island.
Koh Samui FAQ
Where should you stay in Koh Samui?
For a luxury trip: Chaweng if you want the island’s best-known beach with restaurants and energy on your doorstep; Bophut for boutique charm around the Fisherman’s Village; the south or west coasts for privacy and villas — that’s where I stayed, and my Miskawaan Villa review shows why.
How many days do you need in Koh Samui?
Four to five days covers the island well at a relaxed pace: beach days, a brunch, the Big Buddha and waterfalls, and a day or two of diving at Sail Rock. A full week is the luxury version — same list, no rushing, and room for a second brunch.
When is the best time to visit Koh Samui?
Samui’s driest, sunniest stretch runs roughly from December to April — peak season for a reason. The heaviest rain concentrates in October and November; the months between sit in the shoulder, with good odds of sun and better villa rates.
Is the diving in Koh Samui good?
Honestly: Thai diving hasn’t generally convinced me — Indonesia and the Philippines are far superior — but Sail Rock is the exception, with fish density and topography that genuinely impressed me across two days. My full Sail Rock experience is above; for world-class diving trips, my Indonesia diving reviews are where to look.
