The festivals organized in the temple reveals the cultural as well as the religious significance of Sri Sanjeevi Rayar temple. A number of festivals are celebrated in this temple, with enough pomp and grandeur. The sanctified shrine is considered as a Prarthana Sthala, which follows the rules of the Vaikhanasa Agama. During the festival season a large number of people gather in the temple complex in order to offer their worship and veneration t the lord. Among the important festival celebrated in the shrine the significant is Mula Nakshatram (the birth-asterism) of Sri Anjaneya, which is celebrated every month in a grand style. The other important festivals are Margazhi Mulam when Hanuman Jayanthi is celebrated. During the time of Avani Mulam, pushpangi and sandana kapu are offered to the deity as a form of worship. A unique festival associated with this temple is the famous Ayyangar Kulam Nadavavi Utsavam, which is celebrated on the full-moon day in the month of Chittirai (Chitra-Pournami) when Lord Varadaraja from Kanchipuram visits the Nadavavi (Nadavapi) situated on the north side of the Sanjeevi Rayar temple. Here, the first tirumanjanam for Varadaraja Perumal after His Tiruavatara-Utsavam (Hasta nakshatram) is celebrated. This is one of the important festivals performed with immense splendor. The Nadavavi is a beautiful and captivating structure with a grand entrance or gateway, which is made of granite, and steps leading to a large underground mandapa with carved pillars and a sacred kitchen (madapalli). On most days of the year, this entire area is filled with water, but before the beginning of this festival, the water is pumped out and devotees carry the imposing image of Lord Varadaraja inside the cool precincts of the mandapa in the hot month of Chittirai and worship is offered in a grandiose manner. The other significant festivals celebrated here are Sri Rama Navami, Tamil New Year and Navaratri Utsavam. Every Sunday, the temple is open all morning to receive devotees who come to worship Nava-Vyakarana Pandita. This is the name given to Lord Sri Anjaneya.
No visitor can leave the Sanjeevi Rayar temple without experiencing a sense of fulfillment arising out of praying at a temple of great architectural beauty, exclusively dedicated to Hanuman, the foremost devotee of Sri Rama. However the dilapidated condition of this great temple is a matter of regret. A very few devotees come to visit the temple, excepting on certain important festive occasions. Thus the historically famous temple being dilapidated becomes unable to fetch tourists.