Koh Samui vs Koh Phangan vs Koh Tao at a glance
| Koh Samui | Koh Phangan | Koh Tao | |
|---|---|---|---|
| Cost per day | Same baseline (1,000 to 1,500 baht), but the most developed of the three, so rooms and restaurants skew pricier | Same baseline; Haad Rin rooms cost 3 to 4 times more and often need a minimum stay around the Full Moon | Same baseline, plus the cost of a dive course if you're learning |
| Best months | February to September; avoid November | February to September; avoid October to December, worst in November | February to September; avoid November |
| Getting there from abroad | No direct international flights; fly into Bangkok, then a Bangkok Airways flight to Samui, or via Surat Thani and a ferry | No airport; fly to Koh Samui and take a 30-minute boat, or go via Surat Thani and a bus and boat combination | No airport; ferry in from Koh Samui, Koh Phangan or Chumphon |
| Visa | Same Thailand entry rules apply on all three islands; see our Thailand visa guide | Same | Same |
| Beaches | The widest range: busy Chaweng and Lamai, calmer Bophut and Maenam | Haad Rin for the party, Koh Ma and Bottle Beach for quiet snorkelling, Thong Nai Pan for a resort-style bay | Sairee's 1.7 km strip, plus the Koh Nang Yuan sandbar just offshore |
| Food | Fisherman's Village night market, seafood curries and hoy tod | Beachside pad thai and the Thong Sala market stalls | Sairee's cafes, smoothie bowls and fresh fish barbecues |
| Culture | The Big Buddha, Wat Plai Laem and Muay Thai gyms | A west-coast yoga and wellness scene around Srithanu | Almost entirely built around diving, with few sights beyond the water |
| Nightlife | Chaweng's bars and clubs, the biggest everyday scene of the three | The monthly Full Moon Party, plus the Half Moon Festival roughly every two weeks | Sairee's beach bars and fire shows: a few livelier nights a week rather than one big one |
| Adventure | Ang Thong Marine Park day trips, waterfalls, an island-hopping base | Ang Thong day trips, Phaeng Waterfall, snorkelling at Koh Ma | Diving, snorkelling round the island, the John-Suwan viewpoint |
| Ease for first-timers | Easiest: the only airport and the most infrastructure | Moderate: no airport, but frequent boats from Samui | Straightforward once you're island-hopping, but furthest from an airport |
| Getting around | The biggest of the three islands, so plan on taxis or a rented scooter for longer hops | Songthaews (shared pick-up trucks) from Thong Sala, or a scooter; agree the fare before you get in | A small island, walkable around Sairee, with scooters for the rest |
| Solo-friendliness | Good: plenty of hostels and an easy first stop | Very good: draws solo travellers for both the party and the wellness crowd | Excellent: Sairee is a genuine social hub, especially if you're doing a course |
Vibe and beaches
Koh Samui is the Gulf's biggest and most developed island, with its own airport and the region's widest choice of places to stay. Chaweng is the main beach for a first visit, Lamai is a cheaper version of it, Bophut's Fisherman's Village is calmer, and Maenam is the quiet, budget end. See our Koh Samui guide and things to do on Koh Samui for the detail.
Koh Phangan swings between two moods on one island. Haad Rin is loud and built for the Full Moon Party; everywhere else is much calmer. The west coast around Srithanu has the yoga studios and cafes, the north and east have quiet bays like Bottle Beach and Thong Nai Pan, and Koh Ma has the best sandbar and snorkelling. Full detail is in our Koh Phangan guide.
Koh Tao is smaller again and built around the water rather than the sand. Sairee Beach is the main strip, with most of the hostels, dive shops and bars, and Koh Nang Yuan, a short boat ride offshore, is the classic three-islands-and-a-sandbar photo. Our Koh Tao guide has the full rundown.
Winner: Koh Samui, for the widest range of beach towns and the easiest island to settle into on a first visit.
The Full Moon Party (and Phangan's quieter side)
The Full Moon Party happens on Haad Rin Sunrise Beach on Koh Phangan once a month, from about 9pm until after sunrise, with entry a 200 baht wristband. The next dates are 27 October, 24 November and 24 December 2026, plus a New Year's Eve party on 31 December, and the first one of 2027 falls on 22 January. Dates shift when the full moon lands on a Buddhist holiday, so check again close to your trip. Around the party, Haad Rin hotels often insist on a minimum stay of 3, 5 or even 7 nights and charge 3 to 4 times their normal rates, which is why most people base themselves elsewhere on the island and taxi in for the night. Full detail, safety tips and 2027 dates are in our Full Moon Party guide.
Away from Haad Rin, Koh Phangan has a different side entirely: Srithanu's yoga studios and juice cafes, the Half Moon Festival in the Ban Tai jungle roughly every two weeks, and quiet bays like Thong Nai Pan and Bottle Beach that see none of the party crowd. Neither Koh Samui nor Koh Tao has anything like the Full Moon Party, though both are close enough to reach it by ferry for the night.
Winner: Koh Phangan, easily. It's the only one of the three with a Full Moon Party, and the only one with a wellness scene to match it.
Diving and PADI courses on Koh Tao
Koh Tao is one of the cheapest and busiest places in the world to learn to dive. A PADI Open Water course costs about 9,500 to 12,500 baht and takes three to three and a half days; a half-day Discover Scuba try-dive costs about 2,500 to 4,000 baht; and PADI Advanced Open Water runs about 8,500 to 11,900 baht over roughly two days. The island's best-known sites include Chumphon Pinnacle and Sail Rock for certified divers, and Japanese Gardens for beginners and training dives. Our Koh Tao diving guide covers course prices, dive sites and the best season, and our wider diving guide explains how the PADI system works.
Koh Samui has a handful of dive schools too, but far fewer dive sites of its own, so most Samui-based diving is a day trip out to Sail Rock, and some schools run the Open Water course by ferrying you across to Koh Tao for the confined-water and sea dives anyway. Koh Phangan has no dive schools of note; divers based there generally take a boat across to Koh Tao for the day.
Winner: Koh Tao, by a wide margin.
Nightlife
Chaweng on Koh Samui has the biggest everyday nightlife of the three, with a long strip of bars and clubs that runs most nights of the week. Koh Phangan's nightlife is built around events rather than a nightly strip: the monthly Full Moon Party, the Half Moon Festival roughly every two weeks in the Ban Tai jungle, and Haad Rin's regular bars in between. Koh Tao is the quietest after dark. Sairee Beach has fire shows and a few busier nights, and our own Koh Tao guide calls it a good place to meet people "without it becoming a Full Moon-style party."
Winner: Koh Phangan, for sheer scale, even though it's built around a handful of big nights rather than a constant scene.
Cost
Away from accommodation, diving and party nights, all three islands run to a similar 1,000 to 1,500 baht a day for food, drinks and local transport. The differences show up elsewhere. Koh Samui's bigger resorts and restaurant scene push its accommodation higher than the other two. Koh Phangan is normally priced everywhere except Haad Rin on Full Moon nights, when rooms cost 3 to 4 times more. Koh Tao's main extra cost is a dive course, which is genuinely one of the cheapest ways to get PADI-certified anywhere in the world. The island also charges a 20 baht visitor fee at the pier.
Winner: Koh Tao, day to day, unless you're paying for a course, in which case budget for that on top.
Getting between the islands by ferry
The three sit in a line, so hopping between them is a short, frequent boat ride rather than a real decision:
| Route | Time | Price | Operators |
|---|---|---|---|
| Koh Samui to Koh Phangan | About 30 to 45 minutes | About 250 to 370 baht | Lomprayah, Seatran |
| Koh Phangan to Koh Tao | 1 to 2 hours | Roughly 350 to 650 baht | Lomprayah, Seatran, Songserm |
| Koh Samui to Koh Tao | 1.5 to 2.75 hours | From about 700 baht | Lomprayah, Seatran, Songserm, sometimes routed via Koh Phangan |
Sailings run several times a day outside the rainy season, but the Gulf's wet months from October to December, worst in November, can bring rough seas and ferry cancellations. Ang Thong Marine Park also closes from about 1 November to mid-December, so day trips there stop in that window. Don't book an international flight for the same day you leave one of the islands during those months; a spare night on Koh Samui or in Bangkok is cheap insurance. Our Thailand island hopping guide has the full ferry network for both coasts, and the Full Moon Party guide covers getting to Koh Phangan specifically.
Winner: it's a wash. All three are cheap, frequent hops from each other. The only real planning point is building in a buffer during the October to December rains.
Which should you choose?
| If you're... | Choose |
|---|---|
| On a first trip to Thailand and want the easiest landing | Koh Samui, for the airport and the most infrastructure |
| Chasing the Full Moon Party or a big night out | Koh Phangan |
| Into yoga, wellness or a slower pace, away from the party | Koh Phangan's west coast (Srithanu), timed away from the full moon |
| Learning to dive or already certified | Koh Tao |
| Travelling on a tighter budget | Koh Tao, or Koh Phangan outside Haad Rin |
| A solo traveller who wants to meet people without a huge party scene | Koh Tao, where a dive course puts you with the same small group for days |
| Short on time and want to see the most in a few days | Koh Samui, as a base with day trips to Ang Thong Marine Park |
Why not do all three?
Because they sit in a line with short ferries between them, most people don't actually have to choose. A common route flies into Koh Samui, spends a couple of days there, ferries on to Koh Phangan for the beaches (and the Full Moon Party, if the dates line up), then continues to Koh Tao to dive before flying home from Samui or Surat Thani. Our Gulf islands itinerary lays this out in full at 1 week or 10 days: roughly 2 days on Samui, 3 on Phangan and 5 on Tao if you're doing a full PADI course.
