Haad Yuan & Haad Tien — Seclusion, Swimming & The Sanctuary
Just north of Haad Rin's headland, two quiet bays sit tucked into Koh Phangan's southeast coast with no road connecting them to the rest of the island. Haad Yuan is the larger: a sweep of sand, a handful of bungalow stays and a few relaxed beach bars and restaurants right on the water. Haad Tien is the smaller bay around the next rocky headland — anchored by The Sanctuary Thailand, a long-running detox, yoga and wellness retreat that has operated here for decades and drawn a health-minded crowd from around the world.
The single thing that defines both bays is access. You arrive by longtail taxi-boat from Haad Rin's Sunrise pier — a crossing of just a few minutes that delivers you directly onto the sand. There is also a steep jungle track, but most visitors take the boat. That barrier is exactly what keeps the bays quiet: no road means no through-traffic, and the beaches stay unhurried and natural even when the rest of the island is busy.
Both bays face east, so you wake to soft morning light over the Gulf of Thailand rather than the dramatic west-coast sunset. The water in the sheltered coves is generally calm and clear, with good swimming and snorkelling around the rocky headlands. The whole setup feels remote, but Haad Rin's restaurants, cafes and ferry connections are a short boat ride away whenever you need them.