Samui, Phuket or Krabi?

📅 Updated August 2026 · ⏱️ 10 min read · ✍️ The Koh Samui Tours team

We run tours on Koh Samui, so you can guess which island we like. But we also answer a lot of messages from people who would have had a better trip somewhere else, and sending them here anyway would be a poor way to earn a living. This is the comparison we would give a friend: what the three big Thai beach destinations are actually like, where each one wins, and the two or three situations where Samui is plainly the wrong answer.

The short version

If you only read one section, read this one.

The weather fact that settles most arguments

Thailand does not have one rainy season, it has two, and they run on different coasts at different times. The Andaman side — Phuket, Krabi, Phi Phi — gets its monsoon from around May to October. The Gulf side, where Samui sits, is driest from January to April, has a good stretch from May to August, and takes its rain late: October to December, with November the wettest month by a distance.

So the choice frequently makes itself. Travelling in June or July? The Gulf is the drier bet, which is why Samui fills up with European summer holidays while Phuket discounts. Travelling in November? Go to Krabi or Phuket — that is peak Andaman season and the worst four weeks of the Samui year. We tell people this even though it costs us bookings, because a week of rough seas and cancelled boat trips does nobody any good. If your dates are fixed, read the best time to visit Koh Samui before booking anything.

February to April is the one window where all three work well at once. That is also when everything costs the most.

Getting there — where Phuket wins

This is Phuket's strongest card and it is not close. Phuket has a large international airport with direct long-haul flights from Europe, the Middle East and Australia, plus dozens of budget flights a day from Bangkok. Krabi is nearly as easy: a smaller international airport, cheap AirAsia and Nok Air hops from Bangkok, and a very short transfer to Ao Nang.

Samui is the awkward one. The airport is privately owned by Bangkok Airways, which means few carriers, few slots and fares that regularly cost more than the long-haul leg that got you to Thailand. The workaround — fly to Surat Thani and take a ferry — is a fraction of the price and costs you most of a day. There is no version of arriving at Samui that is as simple as landing at Phuket, and if your holiday is a week or less, that gap matters. We walk through every option, with real door-to-door times, in how to get to Koh Samui.

The beaches

Samui has about ten usable beaches on a 25 km ring road, and they are genuinely different from each other: white sand and noise on the east coast, shallow calm bays on the north, empty coconut coast in the south-west. The swimming is easy almost everywhere and the water shelves gently — which is why it suits families and non-swimmers. Our full breakdown is in choosing your beach on Koh Samui.

Phuket has more beaches and a wider range, from Patong's wall of hotels to genuinely quiet sand in the north. But it is a big island with real traffic, and the good beaches are far apart. Getting between them eats afternoons.

Krabi's mainland beaches are the weakest of the three — Ao Nang is a working strip more than a beach. What Krabi has instead is Railay, reachable only by longtail boat, and a coastline of vertical limestone that photographs better than anywhere else in Thailand. You do not go to Krabi to lie on sand; you go to look at it.

Day trips and islands

All three are launchpads, and this is where the character difference shows up most.

From Samui, the whole archipelago is within a morning: Ang Thong marine park and its 42 islands, Koh Tao and Koh Nang Yuan for the best snorkelling in the Gulf, Koh Madsum for the calmest water, and Koh Phangan for waterfalls and empty northern beaches. Boat traffic is a fraction of the Andaman's, so a beach stop still feels like a beach stop.

From Phuket, Phi Phi and James Bond Island are famous, spectacular and extremely crowded — Maya Bay now runs on a permit system with a capped number of visitors, which improved things and also means booking ahead. The Similan Islands are outstanding for diving and closed for roughly half the year during the monsoon.

From Krabi, the Hong Islands and the Four Islands trip are short hops in calm water, and Railay is a twenty-minute longtail ride. Less variety than Samui, more drama per photograph.

Nightlife, food and the general noise level

Phuket wins nightlife by volume and by margin, if Patong's version of nightlife is what you are after; Bangla Road has no equivalent on the other two islands, for better and for worse. Phuket Old Town, on the other hand, is genuinely the best food-and-architecture town of the three, and nothing on Samui competes with it.

Samui's version is Chaweng — busy, loud, contained to one strip — plus the night markets and Fisherman's Village, which is where most people end up eating. Krabi's Ao Nang is a strip of restaurants and quiet bars; if you want to dance, you are on the wrong holiday.

What each one costs

Day-to-day prices are close enough that they should not decide your trip: food, drinks, massages and transport are similar on all three. The differences sit at the two ends.

For what a week actually adds up to, with real numbers per day, see how much a Koh Samui trip costs.

Which one for you

And if you have narrowed it down to the Gulf

Samui, Koh Phangan and Koh Tao are one archipelago and forty minutes apart by boat, but they are not interchangeable. Samui is the only one with an airport, a hospital and a supermarket — it is where you stay if you want infrastructure. Koh Phangan is quieter, cheaper and wilder in the north, with a party once a month that has nothing to do with the rest of the island. Koh Tao is small, steep and built entirely around diving; brilliant for a week with a tank, limited for anything else.

The usual mistake is treating them as a package to be ticked off in ten days. Two islands in two weeks beats three islands in ten days every time — the boats are slow and check-out days are wasted days.

Frequently asked questions