Bun Bang Fai, Thailand's Rocket Festival

Bun Bang Fai is celebrated through the sixth lunar month, in May and June, as the rains arrive. Yasothon, the biggest, holds its festival over a Friday-to-Sunday weekend in mid-May, but the weekend isn't fixed. It was 16–18 May in 2025, the third weekend, and 8–10 May in 2026, the second. Expect the 2027 festival on one of the middle weekends of May. Yasothon province announces it in the spring, so check the province's or the Tourism Authority of Thailand's listing before you book.

Friday is the warm-up. Teams show off their rockets on Chaeng Sanit Road in front of the Provincial Hall, there's a cultural performance and a pageant, and at night stages along the main road play loud music until late. Saturday is the parade, which started at 16:00 in 2026, with teams from villages and districts dancing down the road in costume behind floats carrying their decorated rockets, and judges scoring the dance. Many floats tell the story of Phadaeng and Nang Ai, the lovers of the festival legend, and some carry phallic imagery that goes back to the festival's roots as a fertility rite. Bleacher seats cost a small fee, and they're worth it for the shade if you arrive early.

Sunday is launch day at Phaya Thaen Public Park. After safety checks in the morning, the provincial governor fires the first rocket, and the competitions run through the day, from around 08:00 or 09:00. Teams haul their rockets up tall bamboo and steel launch towers, light them, and the crowd watches to see how high and how far each one goes and how good its vapor trail looks. When a rocket fizzles or blows up on the tower, its team gets thrown into the mud. There are food stalls, parasols for rent and a lot of drinking.

The rockets, bang fai, were once made of bamboo and are now mostly plastic pipe, which standardizes their size and charge. They compete in classes by size. The biggest, the bang fai lan, is about 9 m long and packed with 120 kg of black powder, and the big ones can fly for several minutes and climb kilometers into the sky.

The story behind them is Isan's. Phaya Thaen, the god of the sky, withheld the rains, and Phaya Khankhak, the Toad King, defeated him with an army of termites, scorpions, centipedes and hornets, and made him promise to send the rains each year. The rockets are fired to remind him of the promise. Yasothon has made the Toad King its symbol, and the Phraya Kankak Museum in town is built in the shape of a giant toad. The province has staged the festival every year since it was created in 1972.

These are homemade rockets packed with explosives, and they don't always go where they're meant to. In 1999 a large rocket exploded just after launch and killed four people, in April 2026 a stray rocket from a village launch hit a house in Yasothon province, and in late May 2026 a rocket exploded at a village launch field near the town and seriously injured several people. Stay outside the marked danger zones, keep well back from the launch towers, and watch where each rocket is heading. Expect a crowd that drinks and smokes near the rockets, and leave before the afternoon gets too rowdy for you. Bring a hat, an umbrella or a rented parasol, and plenty of water, because there's little shade.

Yasothon's is the biggest, but villages and towns across Isan hold their own rocket festivals through May and June, from Roi Et and Kalasin to Udon Thani. In Roi Et province, Suwannaphum holds its festival on the first weekend of June, and Phanom Phrai on the full moon of the seventh lunar month. Laos celebrates too, as Boun Bang Fai, in villages around Vientiane and across the country. A smaller village festival is closer to the original, so ask locally if you're in Isan in May or June.

Yasothon has no airport. Fly from Bangkok to Ubon Ratchathani or Roi Et, each about 1.5 hours from Yasothon by road, and take a minivan or a private car from there.

Yasothon has only a handful of hotels, and they fill for the festival weekend, so book as soon as the dates are announced. If the town is full, stay in Ubon Ratchathani, which has far more choice, and drive in early for the parade and the launches.