"Greetings to Malayali friends on Onam. May Onam enhance the spirit of peace, prosperity, brotherhood and truthfulness in our lives," he said.
The Prime Minister said Onam was a symbol of national integration, justice, peace and prosperity.
"It is wonderful how all sections of Malayali society come together to celebrate Onam, making it a wonderful occasion of national integration," a PMO statement quoting Modi said.
He said, "Onam reminds us of the glorious era of King Mahabali and is a day to reaffirm our commitment to create a just, peaceful & prosperous society.