Tens of thousands of pyrotechnics have brightened Australia's skies as people across the country celebrated the new year.
Sydney yet again wowed an estimated one million people around the harbour with a captivating 12-minute display that featured new firework effects, a brighter bridge display and 500kg more explosives than the previous year.
Lime and peach were new additions to the pyrotechnic colour wheel while a new "wave effect" design gave gold palms coloured tips.
The famous coathanger was adorned with an extra 1000 lighting effects and lit until 1am while the Opera House had more than 800 fireworks shot from its sails.
The $5.8 million New Year's Eve show is worth an estimated $133 million to the local economy and is seen by an estimated one billion audience across the globe, organisers say.
Revellers had endured an early thunderstorm and late scattered showers before the stunning midnight show.
"The crowd are just popping on their glowsticks over their ponchos and ignoring it; lots of people dancing and kids up way past their bedtime," Alexandria woman Sadhbh Warren told AAP.
"The fireworks were just awesome," Amit Phaltankar told AAP after waiting eight hours at a harbourside reserve.
Midnight and family-friendly firework shows were held from Hobart to Queensland's Cape York as Australians ushered in the new year.
Bursts of yellow, pink and green soared into the clear Melbourne sky as 14 tonnes of fireworks exploded over 10 minutes to the amazement of thousands of revellers.
For Nilu Sugatadasa and her husband Manoj, there was no chance they were missing the fireworks, having come for 13 years as a couple and now with their two young children.
"We come every year. It is amazing. The fireworks are amazing, the atmosphere, the people, it's like a party - a celebration for us every year," she said on the edge of the Yarra.
"We are always prepared with games, food and come early. The tip is to come a little early, find a spot, and never move and don't rush to come home."
In Brisbane, tens of thousands packed into South Bank to mark the start of 2019 with the city's biggest New Year's Eve fireworks display and a soundtrack of the past year's biggest music hits.
Adelaide ensured its status as a UNESCO City of Music was promoted with live music the highlight of the festivities ahead of two fireworks displays.
Elsewhere, waterfront fireworks displays started on the stroke of midnight in Hobart, Canberra and Darwin.
Australians also rang, texted and snapped in the new year with mobile networks' usage surging as the clock struck 12.
Telstra handled about 4 million SMSs on its network between midnight and 1am while Optus was prepared to transmit some 10 terabytes of Snapchat data in the same period.
