Best Beaches in Thailand for Every Type of Traveller

Thailand has so many beaches that choosing one can feel like a job in itself. Some are long, quiet stretches backed by low-rise resorts. Others sit under limestone cliffs and can only be reached by boat. A few are really a base for diving, with the sand a pleasant bonus.

The first thing to know is that Thailand has two island coasts, and they run on opposite weather calendars. The Andaman coast in the west (Phuket, Krabi, Khao Lak) is at its best from November to April. The Gulf coast in the east (Koh Samui, Koh Phangan, Koh Tao) is at its best for much of the rest of the year. That works in your favour: there's good beach weather somewhere in Thailand almost every month, as long as you pick the right side for your dates.

Below, we've grouped ten beaches by coast and matched each to the traveller it suits best, whether that's couples, families, divers or people who'd like a turtle or two for company. The short version: head to the Andaman coast from November to April and to the Gulf coast from May to August.

At a Glance: Which Beach Suits You?

The Andaman Coast

Thailand's west coast is the one with the dramatic scenery: limestone karsts rising out of turquoise water, jungle-backed bays and some of the best dive sites in the country. It's also where most first-time visitors land, with Phuket airport the gateway to the whole region.

Best time to visit: The Andaman is at its best from November to April, when the sea is calm, the skies are clear and visibility underwater is at its sharpest. December to March is the peak, and the busiest, with late December and New Year particularly full. 

From May to October the south-west monsoon brings heavy rain and rough seas, and September and October are usually the wettest months of all. Diving follows the same calendar: the Similan Islands are only open from mid-October to mid-May, and the best chances of mantas and whale sharks come between roughly February and April. If your dates fall between May and October, the Gulf coast is the better bet.

Khao Lak

Best for: Couples, families and divers

Khao Lak is about an hour north of Phuket airport and feels like a different world. The beaches here (Nang Thong, Bang Niang and Bang Sak, among others) are long and quiet, backed by low-rise resorts rather than bar streets. Nobody comes here for nightlife, which is precisely why couples and families like it. Evenings are for a long dinner, and mornings are for walking the sand before the heat builds.

It's also the departure point for the Similan and Surin Islands, so if diving is on your list, you can stay somewhere peaceful and still be on the water early.

Similan Islands

Best for: Divers and wildlife lovers

The Similans are not a beach holiday in the usual sense. They're a national park, reached by boat from Khao Lak or Phuket on a day trip or a liveaboard, and what you come for is underneath the surface. Visibility is excellent in season, and the reefs sit alongside granite boulders that make for some of the most striking dive sites in Thailand. Koh Bon, just north, is known for manta rays between roughly January and May. Richelieu Rock, usually reached by liveaboard, is famous for whale sharks, with February to April the best window.

Wildlife sightings can never be promised, so treat a whale shark as a lovely bonus rather than the plan. Non-divers aren't left out either: the water is clear enough that snorkelling is well worth it, and the beaches are some of the prettiest in the country. Remember the park closes from mid-May to mid-October.

Kata, Phuket

Best for: Families

Phuket has beaches for every taste, and Kata is the sensible one for a family. The swimming is good in season, there's even some beginner surf, and the restaurants and shops are close enough that nobody has to organise a trek for lunch. It's a place where the logistics are easy, which matters more than people admit when you're travelling with children.

Divers aren't left out: day trips to the Racha Islands and other nearby sites run out of Phuket, and diving here is possible for much of the year. One note on timing: Phuket's west coast gets strong currents and red flags in the monsoon, so for a family beach holiday, stay with November to April.

Railay, Krabi

Best for: Couples

Railay is on the mainland, but sheer limestone cliffs cut it off from the road, so the only way in is a longtail boat from Ao Nang, which takes about 15 minutes. That small bit of effort is what gives the place its character. There are no cars, a limited number of places to stay and a handful of beaches that look like film sets: Railay West for swimming and sunsets, Phra Nang for the cave and the cliffs.

Couples tend to spend their time kayaking around the karsts, wandering over to the quieter beaches and not doing very much else, which is exactly the point. The beaches are tidal, so go early in the day for the best sand and light.

Phi Phi Islands

Best for: Snorkellers, divers and couples

Few places look as much like the postcard as the Phi Phi Islands: steep limestone cliffs, almost fully enclosed bays and turquoise water. Most people see them on a boat day from Phuket or Krabi, but staying on Phi Phi Don gives you the quiet hours at either end of the day, before the tour boats arrive and after they've gone home.

On Phi Phi Don, Loh Dalum is the bay from the photographs, with beach bars and a sociable feel once the sun starts to drop. Long Beach, a short walk or longtail ride away, is calmer and has a reef just off the sand. Shark Point, at its eastern end, is a good snorkel for blacktip reef sharks, ideally early or late in the day when fewer boats are out. Divers can also join day trips to Hin Daeng and Hin Muang from Phi Phi.

Then there's Maya Bay on neighbouring Phi Phi Leh, made famous by the film The Beach. It reopened in 2022 after a long closure, with tight rules: no swimming, capped visitor numbers and no boats inside the bay. It also typically closes for around two months each year, usually August and September, and can shut at short notice when the sea is rough. During November to April you'll normally find it open, but check before you build a day around it. If it's closed, or you'd rather skip the crowds, head to Bamboo Island instead. It has white sand, almost no development and a reef close to shore, and it's usually a stop on the longer island-hopping tours.

Koh Lanta

Best for: Families and couples

Koh Lanta sits south of Krabi, about a two-hour ferry from the mainland, and draws a quieter crowd than Phuket or Phi Phi. Klong Dao, the beach nearest the pier, has a gentle gradient, so small children can paddle a long way out and still be safe. Further down the island, Kantiang Bay is the more secluded option for couples who want sunsets without company.

It also has a good claim to being the best base for diving without the liveaboard commitment. Day trips run from Lanta to Koh Haa and the twin seamounts of Hin Daeng and Hin Muang, which are among the best dive sites in the country after the Similans, and in season can bring mantas and whale sharks.

Koh Lipe

Best for: Couples and snorkellers

Koh Lipe sits close to the Malaysian border, and it's a tiny island with three main beaches: Sunrise, Sunset and Pattaya. The water around it is the main event, with clear conditions for snorkelling and diving, and a very different feel from Phuket's busier strip. It suits couples who want a small, walkable island and are happy with the sea as the day's entertainment.

Go with your eyes open on timing. Koh Lipe has the shortest season of any Thai island, running from roughly November to April. From mid-May to mid-October most resorts, restaurants and dive shops close and ferries scale back, so this is one to book for the dry months only. December to March is the sweet spot for water clarity.

The Gulf Coast

Thailand's east coast is where the weather swings the other way. Koh Samui, Koh Phangan and Koh Tao are sheltered from the south-west monsoon, so while Phuket is wet through the summer, these islands stay mostly dry. They're also close together, linked by regular ferries, which makes it easy to combine two or three in one trip.

Best time to visit: The Gulf is best from roughly January to August, with the driest, calmest stretches in the first half of the year and again over the summer months. The rainy season runs from October to December, peaking in November, when seas around Samui, Phangan and Tao can turn rough. For diving at Koh Tao, March to September is the sweet spot, with whale sharks most often spotted around Chumphon Pinnacle between about March and May. If you're travelling in July or August, this is the coast to choose.

Koh Samui

Best for: Families and couples

Samui is the easy island. It has its own airport, the widest choice of hotels in the Gulf and a beach for most moods. Chaweng is the busy strip with the bars and most of the mid-range hotels. Lamai is a little calmer. Bophut and its Fisherman's Village is the prettiest corner, with boutique hotels and restaurants along a waterfront that still feels like a village.

That range is what makes it work for families and for couples who like their comforts: you can have a relaxed day on the sand, add a boat trip to Ang Thong Marine Park, and be back for dinner without any logistics to worry about. It isn't the place for serious snorkelling, so leave that to Koh Tao.

Koh Phangan

Best for: Couples and families

Mention Koh Phangan and most people think of the Full Moon Party, which is held at Haad Rin. The rest of the island is a different story. The north and east are quiet, and Thong Nai Pan, with its two bays, is a calm and pretty place that suits families as well as couples. The island also has a long-standing wellness side, with yoga retreats and a relaxed pace once you're away from the party beach.

It's less set up for children's activities than Samui, so it works best for families with older kids who like being outdoors. Snorkelling is best around Mae Haad, where a sandbank links the beach to the tiny island of Koh Ma.

Koh Tao

Best for: Divers and wildlife lovers

Koh Tao is the smallest of the three Gulf islands, and its nickname, Turtle Island, hints at why people come. It's one of Thailand's most popular places to learn to dive, with dozens of schools, including courses for children, and conditions that are relaxed enough for beginners. Experienced divers have Sail Rock and Chumphon Pinnacle, both known for big fish and whale shark sightings.

You don't need to dive to see wildlife. At Shark Bay, blacktip reef sharks cruise the shallows and green turtles are regular visitors. The sharks are shy and generally no threat to snorkellers. Sairee Beach, the island's main stretch, is a good place to end the day, with a lively sunset and a drink in hand.

One honest caveat: Koh Tao's reefs have been hit by visitor numbers and coral bleaching, so don't expect pristine coral. For that, the Similans are better. For learning, turtles and easy conditions, Koh Tao is hard to beat.

Which Coast Should You Choose?

Frequently Asked Questions

What is the best time to visit Thailand's beaches?

It depends on the coast. The Andaman coast (Phuket, Krabi, Khao Lak) is best from November to April, and the Gulf coast (Koh Samui, Koh Phangan, Koh Tao) is best from roughly January to August.

Which Thailand beach is best for families?

Kata in Phuket and Klong Dao on Koh Lanta both have easy, shallow swimming. Koh Samui is the easiest island for families because of its airport and range of hotels, and Thong Nai Pan on Koh Phangan suits families who prefer something quieter.

Which beach is best for couples?

Railay in Krabi is the most dramatic, Khao Lak is quiet and unhurried, and Koh Lipe suits couples who want a small, walkable island. Koh Samui's Bophut is a good fit for couples who like comfort and good restaurants.

Where is the best place to learn to dive in Thailand?

Koh Tao in the Gulf of Thailand is one of the most popular places to learn, thanks to its many schools and relaxed conditions. The best months are March to September. For more advanced diving, the Similan Islands and Hin Daeng near Koh Lanta are outstanding from November to April.

Where can you see whale sharks and manta rays in Thailand?

Whale sharks are most often seen at Richelieu Rock, Chumphon Pinnacle and Sail Rock, with manta rays at Koh Bon, Koh Tachai and Hin Daeng. On the Andaman side, sightings are most likely between February and April. Sightings are never guaranteed.

Is Maya Bay on Phi Phi open?

Usually, but not all year. Maya Bay typically closes for about two months each year, normally August and September, and it can also close at short notice in rough weather. When it's open there are limits on visitor numbers and no swimming. Bamboo Island is a good alternative.

Can you visit the Similan Islands all year?

No. The Similan Islands National Park is only open from mid-October to mid-May, and the best diving is between December and April.

Planning Your Thailand Holiday

Matching the right coast to your dates matters more in Thailand than almost anywhere, and it's easier to get right before you book. If you'd like help choosing, get in touch and we can help you shape a trip around your dates, your group and the kind of beach holiday you have in mind.

Get in touch to start planning your Thailand holiday