Onam (Malayalam: ഓണം) is a Hindu festival celebrated by the people of Kerala, India. It is also the Harvest festival of Kerala with State holidays on 4 days starting from Onam Eve (Uthradom) to the 4rd Onam Day. Onam Festival falls during the Malayalam month of Chingam (Aug - Sep) and marks the commemoration of Vamana avatara of Vishnu and the subsequent homecoming of mythical King Mahabali. Onam is reminiscent of Kerala's agrarian past, as it is considered to be a harvest festival.
The festival falls during the Malayalam month of Chingam (Aug - Sep) and marks the homecoming of the mythical King Mahabali who Malayalees consider as their King. In Kerala, it is the festival celebrated with most number of cultural elements such as Vallam Kali, Pulikkali, Pookkalam, Onatthappan, Thumbi Thullal, Onavillu, Kazhchakkula, Atthachamayam etc