What Yi Peng Actually Is (and What It Isn't)
You have seen the photograph: thousands of glowing paper lanterns lifting into a black sky, faces upturned, everything gold. It is one of the most reproduced travel images in the world, and it is the reason a lot of people come to Chiang Mai in November.
Here is what that photograph does not tell you.
Yi Peng (*ยี่เป็ง*, "second month" in the Lanna calendar) is a northern Thai — specifically Lanna — Buddhist festival, distinct from Loy Krathong, the nationwide festival where Thais float candlelit banana-leaf baskets (*krathong*) on rivers and ponds. Yi Peng is the sky-lantern half: releasing a *khom loi* is an act of letting go — of misfortune, of bad karma — and of making merit. The two festivals fall on the same full moon and, in Chiang Mai, are celebrated together. That overlap is unique to the north and is why Chiang Mai is the destination for this.
In 2026 they fall on 24–26 November, per the Tourism Authority of Thailand's official schedule for Chiang Mai.
The thing most visitors don't realise until they arrive: the famous images of thousands of lanterns rising in perfect unison are almost always taken at ticketed, organised mass-release events held outside the city — not at a free public gathering in the old town. If you arrive expecting to wander into that scene for free, you will be disappointed. If you understand the landscape in advance, you can have an extraordinary few days either way.

