Two sweeping rainbands will drench millions in the week to come, as cold, wet conditions prevail over Sunday.
The rainbands are tipped to sweep the nation over the week bringing widespread rain across Victoria, New South Wales, Queensland, South Australia and the Northern Territory.
The heaviest rainfall is expected to hit the Murray-Darling basin, with some areas expecting to see 50 to 100mm totals over the next seven days.
The first of the two rainbands is expected to cross the basin either late on Monday or early on Tuesday.
The second will arrive between Wednesday and Friday.
On Sunday, Australia’s east coast is also in for a soggy Sunday, with onshore winds pushing showers along the coastline.
Daytime temperatures are tipped to warm gradually, trending slightly above average into midweek in Australia’s east.
A cold front washing across Western Australia and a deep low off the state’s south coast have whipped up ferocious winds and wild swells over the past days.
The system is expected to drag more rain and wind across the state until midway through next week.
Over Sunday, Canberra and Hobart will be the nation’s coldest cities.
The nation’s capital is to expect temperatures between 3 and 14C with the chance of a late shower.
Hobart is expecting between 3C and 12C.
In Melbourne, the mercury is tipped to hover between 5C and 17C with fog clearing into a sunny day.
Sydney has a high chance of heavy showers on Sunday, with a minimum of 12C and a maximum of 18C.
Brisbane is also expecting light showers and temperatures between 12C and 21C.
In Darwin, the maximum will be 31C and the minimum 21C on a partially cloudy day.
A cloudy day in Adelaide will see temperatures sit between 10C and 18C.
The systems swirling over Perth mean residents can expect temperatures between 11C and 19C and showers throughout the day.