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How to celebrate or observe Onam ? When is Onam this year ? Onam date and timings. When is Onam 2025 Celebrated? Onam is celebrated in the Malayalam month of Chingam, which typically falls in August or September. In 2025 , the dates are as follows: Atham (Day 1): August 26, 2025 Thiruvonam (Day 10): September 5, 2025 Thiruvonam is considered the most significant day, believed to be the time when King Mahabali descended from the heavens to visit his people. Families prepare grand feasts, decorate homes with flowers, and perform traditional rituals to welcome him. Onam is the most important festival celebrated in Kerala. In 2025 , the 10-day-long festivity began from 26 August to 5 September, with Thiruvonam as the main day. Find all key Onam 2025 dates , traditions, and cultural highlights here. Onam (Thiru Onam Day) will be celebrated on Friday, 5th September 2025 . Know the significance, holiday status, Kerala celebrations, bank closures, impact on services, and Onam wishes.
