Haad Rin — Koh Phangan's Full Moon Party Headland
Haad Rin occupies the narrow headland at Koh Phangan's south-eastern tip, and it is where the island's reputation was made. Two beaches sit back to back across the same thin neck of land: Haad Rin Nok — Sunrise Beach — on the east, and Haad Rin Nai — Sunset Beach — on the west. You can cross between them on foot in a few minutes, which means you can swim in the morning light on one side and watch the sun drop on the other without moving your base.
The two beaches define the area's split personality. Sunrise Beach is the long sandy stage where the Full Moon Party — one of Asia's most famous monthly beach events — has run for decades. Sound systems line the shoreline, fire performers work the waterline, and thousands of travellers from across the Gulf islands converge on the headland once a month. Sunset Beach is the quieter counterpart: a sheltered cove where the high-speed catamarans from Koh Samui dock at the pier, and where the bars and guesthouses run at a noticeably calmer pitch on most nights.
For almost everyone who visits Haad Rin, the Full Moon Party is either the reason they came or something they're carefully timing around. The area is built on that rhythm. On non-party nights the headland is a lively but manageable beach town with good food, reasonable accommodation across all budgets and easy songthaew access to the rest of the island. As the full moon approaches, plan everything around it — rooms fill early and prices rise across the headland. That is Haad Rin's nature, and once you accept it, the place makes complete sense.