Celebrations includes millions of lights shining around temples and other buildings in the communities and countries where it is observed.
Tickets for the event at Forum North are $12, with under-5s admitted free. The entry price includes an Indian meal.
Association board member Jas Singh said guests would enjoy buffet Indian vegetarian dishes prepared by volunteers from the Whangārei Sikh Society before entertainment started from 1pm.
Food will consist of chapati, rice, lentils, mattar paneer, lentils, halva - which is a sweet confection made from semolina, mix vegetable, and raita.
The popular 50/50 dance crew from Auckland will headline the entertainment with local dance groups, including an item from students of Maunu Primary School and bhangra, also in the mix.
There will be raffles and spot prizes up for grabs.
"I'd urge everyone to come and celebrate with us. The public have been supporting us during Diwali celebration over the years and we expect similar support this year. It's going
to be a fun-filled afternoon."
Tickets can be purchased from Shiraz Indian restaurant, in Walton St, and on Kamo Rd.