Kerala is the only state in India where Diwali is not a major festival.
Onam is the main festival of Kerala.
Diwali was never followed among the local Keralites as it is not part of their culture.
However, today with a cosmopolitan population in most of the cities in Kerala, Diwali is celebrated in the state but celebrations are on a smaller scale as compared to the Diwali celebrations taking place in rest of the country.
How to Say Happy Diwali in Malayalam :
In Malayalam, people wish each other Happy Diwali saying Deepavali Aashamsagal (ദീപാവലി ആശംസകള്)
Diwali Wishes in Malayalam :
Also Read : Diwali Celebrations in Kerala