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Tamil Calendar September 2025: September 2025 is a spiritually rich month for Tamil people, marked with several significant festivals and observances. This period brings together cultural celebrations, harvest rituals, and traditional prayers, making it one of the most important months in the Tamil calendar. However, Malayali people celebrate Onam with great enthusiasm, but for ancient Tamil people, Onam is among the key festivals, which is a harvest festival that symbolises prosperity, joy and the legendary return of King Mahabali. Families come together to prepare the grand feast known as Onam Sadya, decorate homes with pookalams (floral designs), and engage in cultural programs.

Another major observance is Pitrupaksham (Mahalaya Paksham), a sacred fortnight dedicated to remembering and offering prayers to ancestors. During this time, people perform rituals like Tarpanam and Shraddha to seek blessings from forefathers. 

Apart from these, days like Amavasya, Pradosham, and Sankashti Chaturthi also hold spiritual significance, guiding people toward rituals of purification, devotion, and gratitude. Together, these festivals highlight the deep connection between Tamil traditions, nature and spirituality, making September 2025 a month of togetherness, devotion, and cultural pride.

Tamil Festive Calendar For September 2025 

Here is a complete list of important festivals and auspicious dates falling in September 2025 for Tamil people according to the Tamil calendar.

Date Day Festivals
3 September Wednesday Ekadashi
5 September Friday Pradosham, Onam, Teacher's Day, Milad-Un-Nabi
6 September Saturday Anant Chaturdashi
7 September Sunday Pournami, Pournami Viratam
8 September Monday Pitrupaksham, Nativity Of Mary
10 September Wednesday Sankatahara Chaturthi
11 September Thursday Subramania Bharati Samadhi
14 September Sunday Mahalakshmi Vratam Ends
17 September Wednesday Vishwakarma Jayanti, Kanya Sankranti, Ekadashi, Sabarimala Nada Thurappu
19 September Friday Masa Shivaratri, Pradosham
21 September Sunday Amavasai
22 September Monday Sri Somavara Vratam, Navratri Begins
23 September Tuesday Chandra Darshan
25 September Thursday Chaturthi Vratham
26 September Friday Lalita Panchami
28 September Sunday Durga Puja, Shashti Vratham
30 September Tuesday Durga Ashtami




The Tamil festive calendar for September 2025 beautifully blends devotion, culture, and traditions. With celebrations like Onam, Sankatahara Chaturthi and rituals such as Pitrupaksham, this month reminds us of the importance of gratitude, togetherness, and spiritual connection. These festivals not only strengthen family bonds but also keep alive the age-old Tamil customs that pass from one generation to the next. September thus stands as a meaningful month of joy, remembrance, and divine blessings for Tamil households.