Asia’s long-running sailing regatta, with yachts racing off the west coast. The 38th edition is based at Phuket Boat Lagoon. Coastal hotels fill fast; watch the boats from the beach or a headland.
5 December: National Father’s Day
A public holiday honouring the late King Bhumibol. Expect yellow flags, ceremonies and busy roads.
26 December: Tsunami remembrance
Quiet ceremonies mark the 2004 tsunami, especially at the memorials in Khao Lak and on the west coast. Join respectfully if you wish.
31 December: New Year’s Eve
Fireworks along the beaches, especially Patong. Book dinner early and expect heavy traffic.
Also this month
Similan and Surin islands open
Both national parks reopened on 15 October 2026; December is one of the best months for clear water.
Maya Bay is open
Maya Bay reopened on 1 October after its annual rest; no swimming, viewing from the boardwalk and the shallows only.
The calmest sea of the year
Dry north-east winds flatten the west coast; lifeguard flags are mostly yellow or green.
Peak-season prices
Rates rise from mid-December to early January. The first two weeks of December are better value.