Bihu is of three types and it is an important cultural festival unique to the Indian state of Assam – 'Rongali' or 'Bohag Bihu' observed in April, 'Kongali' or 'Kati Bihu' observed in October or November, and 'Bhogali' or 'Magh Bihu' observed in January. The festivals present an admixture of Tibeto-Barman, Austroasiatic and Indo-Aryan traditions entwined so intricately that it is impossible to separate them—festivals which are uniquely Assamese to which all communities of Assam had contributed elements. The Rongali Bihu is the most important of the three, celebrating spring festival. The Bhogali Bihu or the Magh Bihu is a harvest festival, with community feasts. The Kongali Bihu or the Kati Bihu is the sombre, thrifty one reflecting a season of short supplies and is an animistic festival.

The Bihu dance is an indigenous folk dance from the Indian state of Assam related to the Bihu festival and an important part of Assamese culture. Performed in a group, the Bihu dancers are usually young men and women, and the dancing style is characterized by brisk steps and rapid hand movements. The traditional costume of dancers is centered around the red color theme, signifying joy and vigour.