Arunachal Pradesh temple festivals form an essential part of the life of the tribals and are celebrated throughout the year. Most of the festivals of Arunachal Pradesh that are celebrated in temples are associated to agriculture and fêted in a ritualistic manner. The Arunachal Pradesh temple festivals are celebrated as a thanksgiving ceremony to the God for his divine intervention or to pray for a good harvest.

Dances form an essential part of the Arunachal Pradesh temple festivals and are performed to express their joy of life. Some of the important festivals are Mopin and Solung of Adis, Sherdukpens and Boori-Boot of the Hill Miris, Losar of Monpas, Dree of Apatanis, Nyokum of Nishis, Si-doni of Tagins, Reh of Idu Mishmis and so on. Animal sacrifice happens to be a habitual ritual in all kinds of Arunachal Pradesh temple festivals.

The `Solung` is the main festival of `Adis` and is one of the Arunachal Pradesh temple festivals. This celebration is a manifestation of the Adis festival cult. There are various stories associated to its origin, but the most commonly accepted one is that the Adis were asked by Kine-nane, the Goddesses of wealth and prosperity to perform the Solung Puja.

The Arunachal Pradesh temple festivals are known as the Bangnis. Some of these festivals are celebrated annually in every village on a community basis in the Bangini months of Lakhang and Leehar corresponding to the English month of March and April. The Arunachal Pradesh temple festivals are celebrated for a number of days and the number of days depends on the result of divination performed prior to the fixation of the date of celebration.

The site where the Arunachal Pradesh temple festivals are celebrated is called `Mlkom-Yulo-Nyengeng`. However, these festivals can be held in any sacred premises. On the previous day of the festival, the villagers keep themselves busy in collecting rice beer, rice making rice powder, egg and silk cloth. Sacrificial animals such as mithun, cow, pig, goat and fowl are usually purchased either from their common village fund or by collecting money or paddy from each of the house hold.

Some more Arunachal Pradesh temple festivals are Dree, Murung; while the festivals of the Nishi tribes are Siron Molo Sochum, Nyokum and Yulo. The Monpa festivals are Losar, Jomu and Chosker. The Arunachal Pradesh temple festivals are some of the most enjoyable events in the state, closely following the tribal customs and rituals.