Whether you're into sheep shearing, whip cracking, fireworks or surfing, there is something for everyone this Australia Day.
And a 100-year-old Iraqi-born grandmother and a two-year-old Indian boy are among nearly 3600 people from 113 countries to become citizens across the state on Sunday.
The largest ceremonies in NSW will take place at Sutherland and Blacktown.
Meanwhile in Sydney, an indigenous ceremony will welcome in Australia Day with a ritual fire at the Opera House at 7.30am.
The fire, along with offerings from around the world will then be carried onboard a boat, before meeting bark canoes under the Harbour bridge for a smoking ceremony.
It will commemorate our past and future, with the national anthem to be sung in the Eora language.
Throughout the day, other free festivities include the popular race of Sydney's ferries, as well as the Australian army parachute display over Circular Quay.
In a new event, tug boats and 10 yachts will perform a "ballet" on the harbour.
Singers Mahalia Barnes and Prinnie Stevens will entertain with the sounds of motown in Darling Harbour from 6pm.
Ms Barnes said it is a great opportunity to celebrate and be grateful.
"We live in one of the most amazing countries in the world, we are very, very lucky," she told reporters on Saturday.
"The best thing about it is that everyone goes out and has a good time."
At 8.45pm, fireworks will mark the finale of the festivities on the harbour.
Meanwhile, face painting, an animal farm and a 3pm concert with The Wiggles will be rolled out at Hyde Park through the day to keep the kids entertained.
"Police have said that the crowd that comes to The Wiggles, Dorothy the Dinosaur and Peppa Pig are the best behaved crowds of the Australia Day weekend," Blue Wiggle, Anthony told reporters.
"It is a lovely, lovely day for families to come along, celebrate Australia and the multicultural society we live in."
Further west in Sydney's Olympic Park, about 6000 Sydneysiders are expected to head to Bicentennial Park for fireworks, sheep shearing, whip cracking and sheep dog trial shows.
Elsewhere in the state, more than 110 people are hoping to break a world record by riding the same wave at North Broulee Beach on the NSW south coast.
At Newcastle a national maritime festival will be held from 8am to 5pm.
Across the state, police are urging people to slow down after almost 800 speed infringement notices were issued on day one of the long weekend campaign.
"With 168 major crashes and one fatality, I'd like to again remind drivers to slow down, stay within the speed limit; no deadline is worth dying for," NSW Police Traffic and Highway Patrol Commander, Acting Assistant Commissioner Stuart Smith said in a statement.