IT'S time to find your thongs and search for your swimmers, with predictions some of the warmest winter temperatures for almost a decade are set to hit the east coast.
Just a few days ago there were forecasts the city could have its warmest August day for two years. Things have moved on quickly - now it could be the hottest it's been for eight years.
Parts of Brisbane could reach into the mid-30s.
However, further south and west things are going to be far more wintry with severe weather warnings for gales in Victoria and above average rainfall in Perth.
A series of cold fronts bringing winter misery to Western Australia are running out of puff before they reach the east coast, or just missing it entirely and heading for Melbourne instead.
"This is leading to prolonged periods of north-westerly winds and above average temperatures, especially near the east coast," Sky News Weather meteorologist told news.com.au earlier this week.
For much of NSW and Queensland it's going to be a balmy weekend of winter sunshine but the really scorching days will come next week.
On Wednesday, Brisbane could top out at 30C. Ipswich, in the city's west, has a forecast peak of 32C on the same day - both would be the hottest highs in August since 2009.
South of the border, Tamworth's 26C on Tuesday and Dubbo's 27C will be the warmest winter days for four years.
Sydney's forecast 25C on Tuesday will be a full 7C warmer than the August average.
But before the good people of NSW and Queensland start stocking up on sunscreen, there's the weekend to get through first.
It's not going to be quite as warm but 21C and sunny in Sydney is nothing to be sniffed at.
While 26C on the Gold Coast and 28C in Brisbane should see a smile creep across the face of sunshine state citizens.
In Melbourne, things are far more seasonal. A high of 17C on Sunday is as good as you're going to get and there's a chance of rain.
The city should creep up to 19C by the middle of next week.
But before Victorians even get to Saturday they'll have to contend with serious gales.
The Bureau of Meteorology has issued a severe weather warning for much of the state's coast, just south of Melbourne, as a cold front barrels through the Bass Strait for Friday evening.
Gusts of 100km/h can be expected by the Strait as well as on high ground around the Otways.
The same cold front could bring even more blustery conditions for northern Tasmania with gusts as high as 110km/h overnight on Friday.
Hobart will see a max of 13C on the weekend with showers a feature. A high of 18C beckons on Tuesday.
It'll be a far more pleasant weekend in Adelaide with some sun. Sunday will be the warmest day at 21C although Monday will surpass even that, getting to 22C, before the mercury slips back into the teens.
In Perth, things are miserable. It's all about the rain with up to 25mm forecast on both Saturday and Sunday coupled with highs of 19C. Next week isn't much better.
Unlike the east coast, which has had one of its driest winters ever, Western Australia is wet, wet, wet.
The Bureau of Meteorology told AAP Perth's winter rainfall so far was above average with 321mm. The average winter total is 473.5mm.
Forecasters have advised sun seekers take advantage of the baking weather while they can though. Mr Saunders said the unseasonable highs won't last.
"Medium range models are indicating temperatures will drop behind a south westerly change later next week."