Sivasagar's cultural life is deeply connected to its Ahom heritage and the broader Assamese festival calendar.
Bhogali Bihu
January
The most enthusiastically celebrated festival in Sivasagar. Massive community bonfires (mejis) are lit in the grounds of Rang Ghar and Talatal Ghar. Traditional Bihu dance performances, songs, and feasts fill the historic spaces.
Sivasagar Festival
February/March
A cultural festival organized by the tourism department showcasing Assam's history, Ahom legacy, traditional crafts, local cuisine, and folk performances against the backdrop of the historic Ahom monuments.
Rongali Bihu
April
The Assamese New Year celebrated with Bihu dance, songs, and community feasts across the town. The Sivasagar Tank area becomes a hub of cultural performances.
Deodhani Festival
July/August
A traditional festival celebrated at the Sivasagar Tank and nearby temples, featuring Deodhani dance — a ritualistic performance where devotees go into a trance and dance to the beat of drums.