Koh Samui Travel Guide
Curated by Our Guild Explorers · Updated July 2026
Palm-fringed sand in the warm Gulf, a golden Big Buddha above the north shore, and the marine parks a short boat ride away — the easy-going island of the Surat Thani chain.
Koh Samui is the big, easy-going island of the Gulf of Thailand — the largest of the Surat Thani islands, set off the country's southeast coast where the water is warm and the coconut palms come almost to the tideline. For years it was a backpackers' secret reached only by boat; today it has its own airport, a ring road, polished resorts and a wellness scene, yet it still moves at island pace. This is not the limestone drama of the Andaman coast. Samui's pleasures are gentler: a long swim off Chaweng, a golden Buddha catching the morning light at Wat Phra Yai, a plate of grilled fish at Bophut's Fisherman's Village, and a boat out to the emerald lagoons of Ang Thong. It is also a natural base — Koh Phangan, Koh Tao and the marine parks are all within easy reach — and, usefully, it keeps a different weather calendar from Phuket, so the two islands are rarely wet at the same time.
About Koh Samui
The who, what, where — and how it works — before you go.
Samui is best pictured as a rough circle with a road running all the way round it. The east coast holds the two big beaches: Chaweng, the longest and liveliest, and Lamai, its quieter neighbour to the south. The north shore is gentler and more scenic — Bophut with its restored Fisherman's Village, Maenam and Choeng Mon — and it is here, on a small headland reached by a causeway, that the golden Big Buddha looks out over the sea. The interior climbs quickly into jungle-covered hills, with waterfalls and viewpoints tucked into the green.
One quirk to factor in before you book, because it surprises people who assume all of Thailand shares one dry season: Samui's weather is roughly the reverse of Phuket's. The island sits in the Gulf and catches the northeast monsoon, so its wettest, roughest stretch falls in October to December — exactly when the Andaman coast is drying out. Get the timing right and you land in bright, calm weather; get it wrong and the boats to the marine parks may not run.
Samui is more expensive than the Thai mainland — it is an island resort market, and it prices like one — but by Western beach-holiday standards it still feels a bargain, especially for food and massages. The whole country runs on Indochina Time (UTC+7), and there is no daylight saving, so the offset from home stays the same all year.
Why visit Koh Samui
Four reasons to point the trip at the Gulf.
Palm-fringed Gulf beaches
Warm, calm water and long ribbons of coconut-shaded sand — Chaweng and Lamai for the buzz, Bophut and Maenam for the quiet.
A base for the islands
Ang Thong, Koh Tao and Koh Phangan are all short hops away, so Samui makes an easy hub for island-hopping and day trips.
Direct flights & polished resorts
Its own airport and a mature crop of hotels mean you can be on the sand within hours of landing, no long transfer required.
Wellness & village charm
A strong retreat and spa scene, plus the restored teak shophouses and night market of Fisherman's Village at Bophut.
Top things to do in Koh Samui
The experiences worth building the trip around.
● Chaweng Beach
The island's headline stretch: a couple of kilometres of soft sand and clear, swimmable water, with the bars and beach clubs at your back.
● The Big Buddha
Wat Phra Yai, the 12-metre golden Buddha on its northern islet, reached by a causeway and best caught in the low light of morning.
● Ang Thong day trip
A boat out to the marine park's 42 emerald islands — kayaking, a viewpoint hike, and the hidden inland lagoon of Koh Mae Ko.
● Fisherman's Village
Bophut's old teak-shophouse lane, at its best on Friday night when the walking street market takes over with food and stalls.
● Na Muang Waterfalls
Two jungle falls in the island's green interior — the lower one an easy stroll, the upper a steeper climb to a taller cascade and pool.
● Hin Ta & Hin Yai
The famously suggestive "grandfather and grandmother" rock formations on the shore near Lamai, plus the surf breaking over the boulders.
Explore the Gulf islands & coast
The neighbouring islands and the mainland gateway — worth a day, or a leg of the trip.
Koh Phangan
The Full Moon Party island next door — but also quiet north-coast bays and yoga retreats away from the beach.
Koh Tao
Thailand's diving hub — cheap certifications, clear water and coral just off the beach, a couple of hours north by boat.
Ang Thong Marine Park
Forty-two islands of limestone, lagoons and viewpoints — the classic day trip out of Samui, by speedboat or slow boat.
Koh Nang Yuan
The postcard trio of islets joined by a sandbar off Koh Tao, with a viewpoint climb and snorkelling on either side.
Surat Thani
The mainland gateway — the cheaper airport, the train line and the ferry piers that feed all three islands.
Bophut
Fisherman's Village on Samui's north shore — boutique hotels, waterfront dining and the Friday walking street.
Where to stay in Koh Samui
Choose by the trip you want. Chaweng is the main event — the longest, liveliest beach, with the most hotels, restaurants and nightlife, and calm water for swimming. Lamai, the second beach just south, offers the same easy sand at a more relaxed pace, and is a little cheaper. Bophut / Fisherman's Village on the north coast is the stylish choice, with boutique hotels and the island's best strip of waterfront dining. Choeng Mon, tucked into the northeast corner, has quiet coves and shallow bays that suit families, while Maenam is the budget-friendly, laid-back option — a long, unhurried beach with local flavour and gentler prices. First-timers who want life outside the hotel should look hard at Chaweng; couples and families tend to be happier on the north shore.
Best time to visit & getting there
When to go
Samui runs on a different calendar from the Andaman coast. The driest, best months are February–April and June–August, when the Gulf is calm and the marine-park boats run reliably. October–December is the wettest, when the northeast monsoon brings rain and rougher seas — the flip side of Phuket, which is drying out just as Samui gets wet.
Getting there
Samui International (USM) is small, scenic and largely served by Bangkok Airways, which owns it — so fares run high. A cheaper route is to fly to Surat Thani (URT) on the mainland and take a bus-and-ferry combination, or drive to the Donsak pier and catch the car ferry across. Slower, but it can save a good deal.
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Koh Samui travel FAQ
When is the best time to visit Koh Samui?
Samui runs on the opposite calendar to Thailand's Andaman coast. The driest, sunniest stretches are February to April and June to August, while October to December is the wettest, when the northeast monsoon pushes rain and rougher seas across the Gulf. If you're weighing Samui against Phuket for the same dates, this reversal often makes the decision for you.
How do you get to Koh Samui?
The direct route is to fly into Samui International (USM), a small, scenic airport largely served by Bangkok Airways, which owns it — so fares run high. The money-saver is to fly to Surat Thani (URT) on the mainland and take a bus-and-ferry combination, or drive to the Donsak pier and catch a car ferry across. It's slower, but often much cheaper.
Koh Samui or Phuket?
Phuket is bigger, busier and better connected, with cheaper flights and more nightlife. Samui is smaller, greener and more laid-back, with a strong wellness scene and easy hops to Koh Tao, Koh Phangan and Ang Thong. Their seasons are flipped, too — when Phuket is wet, Samui is often dry — so the right island can simply come down to your travel dates.
Is Koh Samui good for families?
Yes. Choeng Mon and the quieter end of Chaweng have calm, shallow bays that suit young children, and Bophut and Maenam are gentle and unhurried. There are plenty of family resorts, easy outings like the Big Buddha and the waterfalls, and short boat rides to the marine parks — without the intensity of the party beaches.
Header photograph via Wikimedia Commons, used under its Creative Commons licence.