Songkran, Loy Krathong, Chinese New Year — Bangkok's major festivals and when to go.
The world's biggest water fight — Bangkok's streets become water-gun battlegrounds for 3–5 days in mid-April. Fun but disruptive: prepare to get soaked; travel is chaotic.
Thais float small lotus-shaped boats (krathong) on rivers and canals to pay respects to the water spirits — beautiful and spiritual, especially at Chao Phraya riverside.
Chinatown comes alive with red lanterns, lion dances, and firecracker energy for a week — one of the best times to visit Yaowarat.
December 5 (late King Bhumibol) and July 28 (current King) are national holidays — public buildings decorate, shopping malls put on displays.
The most sacred Buddhist holiday; alcohol sales are banned nationwide — plan around this if a drink matters.
Lunar-based Buddhist holidays shift dates each year — checking an official calendar close to travel dates is worth doing if a specific festival is a reason for the trip.
Accommodation and flights during Songkran and Loy Krathong book up well ahead and cost more — plan and book earlier than usual if visiting specifically for one of these events.