- ✓The first beach-resort decision is the coast, not the resort — the Andaman (Phuket, Krabi, Khao Lak, Lanta) is at its best November to April, the Gulf (Samui, Phangan) often more settled through much of January to September, although conditions vary and the rainfall patterns are not mirror images, so the regional conditions can differ in the same month.
- ✓Book the coast that's dry during your dates. A beautiful resort on the wrong coast in the wrong month means rough seas, paused boat trips and a moody beach — at full price.
- ✓Weigh the transfer before you fall for the photos: a Phuket or Samui resort can be a short airport drive, while a quiet island hideaway can mean a flight, a ferry and a longtail — lovely once you're there, punishing with tired kids.
- ✓Match the beach to the trip: long, swimmable resort beaches (Phuket's Bang Tao or Kata, Khao Lak, Samui's Choeng Mon) suit families and swimmers; the dramatic cliff-and-cove beaches (Railay, Phi Phi) are scenery first, swimming second.
- ✓We name real resorts and beaches for orientation, but publish no prices, star ratings or live sea reports. Verify the current rate, the room type, and — crucially — the live sea and ferry conditions before booking a non-refundable beach stay.
Pick the coast before the resort
The single most common beach-resort mistake in Thailand is booking the right hotel on the wrong coast. The country has two seas with different weather patterns. The Andaman coast in the west — Phuket, Krabi, Khao Lak, Koh Lanta — is at its dry, calm best from roughly November to April. The Gulf islands in the east — Koh Samui, Koh Phangan — are often more settled from around January to September, though conditions vary, with their heaviest rain falling later in the year. The cycles don't line up, which means the better coast can differ by month.
So the order of operations is fixed: take your travel dates, work out which coast is dry, and shortlist resorts there. A November traveller leans Andaman (Krabi, Phuket, Khao Lak); a June or July traveller leans Gulf (Samui). Get this backwards and the prettiest resort in the country can hand you rough seas, cancelled boat trips and a beach the colour of weak tea — and you'll have paid peak-ish money for it. Seasonality isn't a forecast and a 'wet' month is often just an afternoon downpour, but it absolutely decides sea state and boat reliability, which is what a beach holiday lives or dies on.
This page is specifically about the resorts and the beach experience. If you're still choosing the island itself as a destination — its diving, nightlife, mood — start with the islands comparison, then come back here to pick the resort and the beach within your chosen coast.
The Andaman beach resorts — west coast, Nov–Apr
The Andaman is the postcard coast, and its resorts cover every style. Phuket's west shore is the easy-access workhorse: long, swimmable beaches like Bang Tao, Kata, Karon and Kamala backed by resorts of every tier, all a short drive from an international airport. Krabi splits in two — the mainland resorts of Ao Nang and Klong Muang are road-accessible and family-friendly, while the famous Railay coves are boat-only and dramatic rather than easily swimmable. North of Phuket, Khao Lak is a quiet, low-rise resort strip that suits families and couples who want calm, and Koh Lanta offers long, mellow west-facing beaches for slow stays.
All of it peaks November to April. That's the catch as well as the appeal: those are the busy, pricier months, and the headline beaches fill. The green season (around May to October) drops prices and greens the jungle, but the sea roughens, some boat trips pause and the open-facing beaches can turn moody. If your dates fall in the late-year wet stretch, the Gulf will usually give you the easier beach trip — don't force the Andaman just because it's the famous one.
The Gulf and east-coast beach resorts — the different rainfall pattern
On the other side of the peninsula, the Gulf islands give you a beach resort when the Andaman is wet. Koh Samui is the headliner: its own airport, full-service resorts, and a string of resort beaches from busy Chaweng to the calmer, more family-friendly Choeng Mon and the boutique-leaning Bophut. Neighbouring Koh Phangan adds quieter northern-beach retreats away from the Full Moon crowd. The Gulf is often more settled through much of January to September, but conditions vary, which makes this the smart coast for a mid-year beach holiday.
Further east, off the Trat coast near the Cambodian border, Koh Chang and Koh Kood offer jungle-backed resort beaches without travelling to the deep south. They do not follow Samui's later rainfall peak: their wetter period is commonly around May to October. Both require a ferry, while Samui has an airport; verify the complete transfer and current marine conditions for the chosen island.
Transfers, sea state and matching the beach to the trip
Two practical filters decide more about how a beach resort actually feels than the room photos do. The first is the transfer. A resort on Phuket or Koh Samui can be a short, simple airport drive; a quiet hideaway on a small island can mean a flight, a ferry and a longtail boat with luggage. Both can be wonderful — but the second is brutal with tired children or a tight schedule. Be honest about how much travel you want on the way to 'relaxing', and weight the easy-transfer resorts accordingly for short trips and families.
The second filter is what the beach is for. Long, gently shelving resort beaches — Phuket's Bang Tao or Kata, Khao Lak, Samui's Choeng Mon, Lanta's west coast — are made for swimming, families and easy days. The dramatic cliff-and-cove beaches — Railay, the Phi Phi bays — are scenery-first: spectacular to look at and photograph, but cove-style and busier, with swimming secondary. Decide whether you want a swim-all-day beach or a jaw-dropping view, because they rarely come in the same spot. And whatever you choose, verify the live sea and ferry conditions for your dates before any non-refundable booking — that's the one volatile thing this page can't pin down for you.
Sources and official planning resources
Thailand beach resorts · at a glanceHotel FC
- First decision
- The coast, by your dates — Andaman best Nov–Apr; Gulf often Jan–Sep, but variable (different rainfall patterns)
- Easiest transfers
- Phuket and Koh Samui have island airports; Krabi airport reaches Ao Nang and mainland resorts by road, while Railay and offshore islands add a boat
- Hardest transfers
- Small/quiet islands (flight + ferry + longtail) — beautiful but tiring with kids
- Swimmable resort beaches
- Phuket Bang Tao/Kata, Khao Lak, Samui Choeng Mon/Bophut, Lanta west beaches
- Scenery-first beaches
- Railay, Phi Phi bays — dramatic but cove-style, swimming secondary
- Best for
- Picking a resort on the dry coast with a transfer and beach that fit the trip
- Verify first
- Current rate & room type, plus LIVE sea/ferry conditions before a non-refundable booking
