Onam 2025 Malayalam Calendar. Onam is a hindu rice harvest festival primarily kept by hindus of malayalam descent. Onam 2025 is celebrated in accordance with the dates of the malayalam calendar.

This festival occurs on the shravana asterism, which is the day of thiruvonam nakshatram in. First onam is on september 04, thursday, thiruvonam 2025 will be celebrated on september 05, friday.