The main celebration of the temple is Makaravilakku Mahotsavom. Every year, it is celebrated on first day of the month of Makaram in the Malayalam calendar. The festivities begin two days prior to Makaram 1st and culminate in an evening procession from Piravom Town (Pisharu Kovil Temple). All devotees with Thalam, Kavadi, Chenda Melam, Elephant, and other traditional art forms accompany this procession.

One of the primary events of this day is Udayasthaman Pooja, where devotees perform 21 Poojas. Nirmalyam will be performed to officially open the temple, and additional poojas including Ganapathi homam will follow next.

On Navarathri the 9 days are reserved for the special worship of the nine forms of Goddess Shakti / Devi. The final three days of Navarathri – Durgashtami, Mahanavami and Vijayadashami are set apart for the worship of Goddess Saraswati – the Goddess of wisdom and learning. Followers worship their work tools by keeping them in the pooja (worship) room and the temple. Students at this time keep their books and other study materials in the pooja room and the temple for worship. This unique practice is known as Ayudha Pooja (worshipping of vocational tools).

On Vijayadashami day, Words symbolising the name of God are written on the tongue of the child with a golden ring. The child is also made to write letters on a plate of rice with the help of elders. This practice is meant to introduce them to the world of knowledge and letters and is known as Vidyarambham.

Ashtadravya Ganapathi Homam is a potent and revered Vedic ritual dedicated to Lord Ganesha, who is widely venerated as the remover of obstacles, the patron of arts and sciences, and the deity of intellect and wisdom. The term "Ashtadravya" refers to the eight sacred ingredients used in this homam (fire ritual). Performing this homam is believed to invoke the blessings of Lord Ganesha, ensuring success, prosperity, and the removal of any impediments in one's life.

In parekkunnu temple Ashtadravya Maha Ganapathi Homam is celebrated on first day of the month of Karkidakam in the Malayalam calendar every year. On this day, 1008 devotees can reserve Ganapathi Homam, and 1008 coconuts are used.