Haad Yao — Koh Phangan's Long Beach
Haad Yao earns its Thai name — Long Beach — honestly. The bay stretches for more than a kilometre of fine white sand along Koh Phangan's west coast, backed by coconut palms and a friendly cluster of resorts, bars and restaurants. It faces due west, which means the sunset here is a daily event: the sun drops straight into the open Gulf of Thailand, and the beach bars angle their seating toward the horizon.
What puts Haad Yao on most shortlists, though, is the water. The seabed is sandy and shallow and slopes in gradually, making it one of the more reliably swimmable beaches on the west coast through the calm high season — the kind of place where you can actually get a proper swim rather than wading in circles. A fringing coral reef runs offshore for snorkellers willing to swim out a little, and a well-regarded dive centre operates from the beach for those who want to go deeper.
The mood is relaxed without being remote. Beachfront restaurants and specialty coffee shops sit within a short walk of the sand, accommodation covers everything from budget bungalows to comfortable mid-range resorts with pools, and Secret Beach — a small cove with bohemian sunset bars built into the rocks — is a ten-minute scooter ride south. Haad Yao draws families, couples and longer-stay visitors who want a proper beach as their base, not a party scene.