Thousands of artists, schoolchildren and cultural leaders accompanied by caparisoned elephants, various folk art forms, floats and musical ensembles participated in the Chamayam procession.
Thousands of people, including tourists, gathered at Tripunithura to enjoy beauty of the festival which began soon after Governor P Sathasivam hoisted the flag at the Boy's High School ground in the morning.
Civil supplies Minister Anoop Jacob and Excise Minister K. Babu attended the function.
Around 50 traditional folk items were featured in the procession.
The erstwhile kings of Kochi celebrated Onam with great pomp and gaiety.
During the Royal reign, the Maharaja of Kochi used to participate in the procession march from Tripunithura to the Vamanamoorthy temple at Thrikakkara which was attended by representatives from all communities including Hindus, Christians and Muslims.