The days of celebration in the Vilwadrinatha temple begin with 'Thripputhari' brought in a procession through the eastern gateway accompanied by drums, pipes, etc. with the consent of Hariharaputra (Sri Ayyappa) in the month of Chingam (Aug-­Sept), the first month of the Malayalam Era (ME). The 'Niramala' on the first Thursday in the month of Kanni (Sept-Oct) captures our hearts with the fragrance of lotus flowers, high quality of various programmes, and the glamour of decorations and illumination by oil lamps lit all around the temple on the Vilakkumadathara and Deepasthambhams. The fact that art­ists from different parts of the country reach here oh their own accord, seeking the blessings of Vilwadrinatha, to begin their year's programme from this temple and elephants are sent in large numbers for participating in the 'Siveli' procession of this temple, is a notable feature of 'Niramala'. The continuous chanting of the name of Rama by devotees who reach here after propitiating their 'Pitrus' in the river Nila on the new moon day in the month of Thulam gets echoed over the entire area. The distribution of 'Pancha gavyam' commences on the first of 'Vrischikam' and ends with 'Kalabhabhishekam' and sacred procession of Sri Vilwadrinatha on the 10th of Dhanu (Dec-Jan). Devotees after devotees reach here to have darsan of Vilwadrinatha, before crawling through the Punarjani on the day of Guruvayuoor Ekadasi. The month of Makara (Jan-Feb) being the month of temple festivals, experts playing various instruments especially drums, maddalas, etc. get a chance to exhibit their talents far and near. Thiruvilwamala Ekadesi comes in the dark fortnight of Kumbham, before the new moon day. The Ekadesi festival begins from Ashtami day. The whole Vilakumadam is illuminated on that day. The 'Annadanam' or feast conducted on that day with a minimum of 101 Paras (about 1000 litres) of rice is also very famous. The temple will be kept open all the 24 hours on the Dasami day. The ritualistic poojas come to an end by noon on the Ekadasi day. Lots of people far and near are attracted by the Vilwadrinatha Music Festival, conducted during these days.

It is customary to have 'Nadaswara' in the evening and 'Tayampaka', 'Keli' and 'Panchvadya' at night during the festival days. The ritual procession conducted at night on Ekadasi day after the conventional "Vilakkacharam" lasts till five O'clock in the morning. It is believed that Vilwadrinatha has given permis­sion to Kumbhanasa and his companions to move about freely and visit him on this day because he had touched the feet of the Lord's idol though with the evil intention of destroying it.

The 'Nangiarkoothu' (the exposition of puranic stories with suitable actions, jokes, etc. by a lady of the chakyar family) which begins seven days before Ekadasi is a rare item of entertainment in this temple. There is a story behind this. Years ago once the 'Chakyarkooth' was going on in the temple. While enacting the role of Varuna in the Ramayanam Koothu the Chakyar in his own style made fun of Sri Rama getting ready to build a bund across the sea. It is said that just at that moment the door of the eastern shrine of Lakshmana suddenly got open. The Chakyar who was horribly frightened ran away from the temple. After running fast for some time he turned back and made sure that nobody was following him. Thereupon he took off his crown and other items of makeup. This place came to be known as 'Mudiyazhichapara' ever since. After this incident it is the Nangiar who performs this entertainment in the place of Chakiar.

The pooja at night on the Ekadasi day is supposed to be done by Devas and Devis. So the convention is to keep open a small portion of the temporary shed near the shrine. Anyhow it is a fact that unusual crowd is seen here on this particular day.

In the month of Meenam (March-April) 'Sudhikalasam' and 'Sribhuthabali' are conducted in the presence of the Tantri. Besides this 'Sriramanavami' is also celebrated here in this month. The 'Vishukkani' (1 st Medam) is also important in this temple.

After the fire accident, the pooja at noon used to be delayed very often since offerings for worship flowed to the temple. Once some women devotees from Vallapuzha did not get anything to offer. They reached the temple late after the pooja at noon with cucumber cultivated by them. Then the closed shrine was specially opened for them and Abhishekam con­ducted again. Even now the Vishukkani is got ready with cucumber brought as offering to Viswanatha.

The 'Vaisakha' days (April-May) and the new moon days of Edavam and Karkidakam, and 'Thirunira' are other days of importance.

Every year 'Bhagavatha sapthaha' is conducted here. 'Narayaneeya dinam' and 'Geetha dinam' are also observed in this temple. Several people participate in reading

"Sreemannarayaneeyam' and 'Srimat Bhagavad Geetha' on these days. Besides this some devotees read 'Adhyatma Ramayanam' as their offering to Vilwadrinatha not only in the month of Karkidaka but throughout the year.

Formerly this temple had a yearly income of more than one lakh paras of paddy, and a very high standard was maintained in all its performances. As years pass by the ceremonies and festivals of the temple get diminished both in quality and quantity.