When Is Onam In 2025. Onam is one of kerala’s most important festivals, celebrating the harvest season and the return of the legendary king mahabali. In 2025, onam festivities will commence on september 6 (friday) and conclude on september 17 (tuesday).
Onam is a malayali celebration that takes place in the month of chingam. Third and fourth onam falls on september 06, saturday and september 07, sunday.
