Onam 2025 Date: When is Onam? Complete Calendar, Puja Rituals, History and 12-Day Celebrations

Onam 2025: It will be celebrated across Kerala and by Malayali communities worldwide with grandeur and devotion. The festival begins on August 26, 2025 (Atham day) and concludes on September 7, 2025 (Chathayam day) spanning 12 days of rituals, cultural events, feasts, and traditional games. The most important day of Thiruvonam falls on Friday, September 5, 2025.

Onam marks the homecoming of King Mahabali, whose reign is remembered as a golden era of prosperity and equality. Celebrated with rituals like Athachamayam, Vallam Kali, Pulikali, Onam Sadya, Pookalam and cultural dances, Onam is both a harvest festival and a spiritual occasion that unites communities.

Onam 2025 Key Dates and Panchang

Here’s a look at the day-wise schedule of Onam 2025 according to the Malayalam calendar and Nakshatras:

Onam is more than just a harvest festival, it is a celebration of Kerala’s culture, heritage, and spirituality. Rooted in the legend of King Mahabali, Onam represents prosperity, unity, and devotion. From Onam Pookalam (floral decorations) to Onam Sadya (feast of 26+ dishes served on a banana leaf), the festival is a blend of rituals, traditions, and joy.