1.Thai Poosam This is a very important festival, associated with pilgrimage to Palani. Devotees from Tamil Nadu reach Palani by foot (Pada Yathra) and worship. Begining with flag-hosting at Perianayagiamman Temple, this festival runs on for 10 days. Kavadi of various types (with holy water, sugar, flowers, tender co-conuts, etc., ) are offered to Murugan at Palani.
2.Panguni Uthiram-The main feature of Panguni Uthiram is the offering of "Theertham" (Posts of Holy water) from Kodumudi. Lord Palaniandavar is given abhishekam with this holy water. The devotees carrying Kavadi to Palani sing Kavadi - songs throughout their 'Padayathra' and these songs are ancient oral songs.
3.Chitra Pournami-On this day, a ten-day festival is conducted at Arulmigu Lakshminarayana perumal temple. At the Periyanayakiamman Temple also, Lord Muthukumara Swamy, along with Valli and Deivanai, rides in the silver car along the streets around the Temple.
4.Vaikaasi-At the Perianayaki amman temple, it is celebrated for 10 days with procession every day. There is car festival on the 10th day(i.e Visakam). Visakam is Lord Muruga's birthday star. This is celebrated at all Murugan Temples.
5.Aani- During the Tamil month of Aani(3rd month of the Tamil year) Annabhishekam (abhishekam with fragrant cooked rice) is conducted at Thiruvavinankudi Temple, Hill Temple, Periyanayagi Amman temple and Periyavudaiyar Temple. On Aani Uthiram Day, abhisekam is performed to Lord Nataraja and a procession is conducted with the Lord in the Company of the icons of the four Tamil Saints.
6.Aadi(Perukku, Krithigai, Amavasai, Laksharchana)
7.Kandhar Shasti-This is a very important festival at Palani, during the 6 days in the month of Aippasi (7th Tamil month). This is based on the mythological story of Lord Muruga Killing the demons. On this day only (once in a year) the Lord comes down the Hill, and after vanquishing the demons, ascends the Hill again. This is associated with Kandhar Shasti. The four demons (Gajamugan, Tharagan, Singamugan and Surapadman) are won by the Lord. It is a grand sight to see the dramatic representation of this. On this day devotees observe total fasting as they consider that this will offset all their sins.
8.Karthigai- Daily "Chinna Kumarar" goes in procession in the small golden carriage. On Karthigai day, he goes in the Golden Car.
9.Markali- During the Tamil month of Markazhi (9th month) the Hill Temple opens at 4 A.M, and recital of Thiruvembavai is done. The early morning Pooja is done in all the main Temples in Palani. The recital of Thiruppavai is done at Perumal temple.