Tamil Festivals 2025

Solar-based Tamil festivals stay near the same Gregorian dates because their months follow the Sun's passage through the zodiac. Puthandu falls on Chithirai 1, around mid-April; Pongal on Thai 1, around mid-January; and Aadi Perukku on Aadi 18, usually in early August. Their civil dates depend on the solar ingress and the calendar's day-assignment rule, so they are not fixed Gregorian dates. Nakshatra-based festivals such as Vaikasi Visakam, Karthigai Deepam, Thai Poosam, Maasi Magam, and Panguni Uthiram depend on the Moon's nakshatra and the relevant observance rules. Vaikuntha Ekadasi follows the Ekadashi tithi and its observance rules, rather than a particular nakshatra.

Aadi Perukku — also written Aadi Pathinettam Perukku — falls on the 18th day of the Tamil solar month Aadi, typically August 3 or 4. 'Perukku' means overflow or rising, and the festival marks the peak of the monsoon when Tamil rivers — the Cauvery, Vaigai, and Tamraparni — are in full flood. Devotees worship at riverbanks, offer puja to the waters, and pray for continued rains and agricultural abundance. Tamil women wear new clothes, prepare nine-grain rice (kama arisi), and visit riversides or water bodies. Major puja spots include Cauvery ghats at Tiruchirappalli and Kumbakonam, and the Vaigai banks at Madurai. The 18th day was likely chosen as the traditional peak of monsoon water levels in the Cauvery basin. The festival is specific to Tamil tradition — it does not have a direct equivalent in Telugu or Kannada calendars, though Bonalu in Telangana shares a general monsoon-season goddess-worship character.

The Madras Music Season is a deliberate alignment with Margazhi's devotional intensity. Carnatic music sabhas in Mylapore, Triplicane, T Nagar, and Alwarpet run hundreds of concerts through December and into early January — the full span of Tamil month Margazhi. The season is effectively the Carnatic calendar's annual festival, with top performers and young artists all presenting during these weeks. The connection to Margazhi is theological: classical Carnatic music grew from the Bhakti movement and its temple music tradition, and Margazhi is when that devotional energy is highest. Temple concerts, divya prabandham recitations, and sabha performances all occur within the same window. Vaikuntha Ekadasi during Margazhi — when Srirangam's Paramapada Vaasal is opened — is the single largest gathering in the Tamil Vaishnava year. The latest sunrise of the Tamil year also falls in Margazhi, which is why pre-dawn devotional slots (4-6 AM) are routinely filled in this month.

All three calendars share a sixty-year name cycle and interweave solar and lunar elements, but their month systems differ. Tamil uses solar months, Chithirai through Panguni, whose boundaries follow the Sun's movement between sidereal zodiac signs. Telugu and Kannada use lunar months: Chaitra, Vaisakha, Jyaistha, Ashadha, Shravana, Bhadrapada, Ashvina, Kartika, Margashirsha, Pausha, Magha, Phalguna — the same names as the Hindu Amanta calendar. Telugu and Kannada New Years (Ugadi / Yugadi) fall on Chaitra Shukla Pratipada, the first tithi of the waxing fortnight after the new moon — in March or April, depending on the lunar cycle. Tamil New Year (Puthandu) falls on Chithirai 1 in mid-April, linked to the Sun's entry into sidereal Aries (Mesha sankranti). A festival like Vinayaka Chaturthi is observed in all three traditions but called by different names and framed by different month labels.

Tamil years follow a repeating cycle of sixty names, also used in Telugu and Kannada calendars. The Tamil year name changes at Puthandu, on Chithirai 1 in mid-April, so a Gregorian year spans parts of two Tamil years. After sixty years, the name cycle repeats. This differs from a continuously numbered era such as Vikram Samvat.

Karthigai Deepam falls on the Krittika nakshatra day closest to the full moon of Tamil month Karthigai — typically in late November or early December. Across Tamil Nadu, households light rows of clay oil lamps (vilakku) at dusk, placed along compound walls, doorsteps, and windowsills, creating an avenue of light. At Tiruvannamalai in the Arunachala hill country, the Mahadeepam — a giant oil lamp flame — is lit on the summit of Arunachala mountain to mark the moment of Krittika nakshatra on the full moon night. Pilgrims circumambulate the mountain (the 14-km Girivalam) through the night. The theological significance at Tiruvannamalai is distinct from Diwali (which is Kartika Amavasya, a month earlier): Karthigai Deepam commemorates Shiva's manifestation as an infinite pillar of light (the Jyotirlinga). The Chidambaram and Thiruvannamalai temples both hold major deepam festivals on this day.