This week, a rare spring heat wave will send people from Melbourne and Sydney running to the beach, but residents have been warned not to remove their winter woolen garments yet.
Sydney will sizzle when temperatures above the average move on the east coast on Wednesday, peaking at 28 degrees.
However, meteorologists have warned that spring has not yet started, and that lower temperatures will return soon.
Wednesday and Saturday will be the best days to sunbathe in Bondi Beach this week
The northern and eastern states of Australia are preparing for a mid-week shower, with temperatures reaching a level higher than four months
The heat wave hit Melbourne on Tuesday and Victoria's capital reached 24 degrees.
A cold front is expected to move overnight, which will cause the temperature to plummet on Wednesday, Chief Forecasting Officer Keris Arndt told Daily Mail Australia.
Temperatures will rise again to 22 degrees on Friday before falling back to 15 ° C on Saturday and 14 ° C on Sunday.
Sydney will see temperatures rise to 28 ° C on both Wednesday and Saturday, meteorologist Craig McIntosh told Daily Mail Australia.
Tuesday's forecast for the country, where Melbourne is expected to be warmer than Sydney
The western suburbs could see even higher temperatures, possibly above 30ºC.
Temperatures will be eight or nine degrees above the 20.1 ° C average this week, said McIntosh.
The last time the Sydney Observatory Hill approached 27 ° C was on May 4, while Penrith, in the west of the city, registered at 27.5 ° C on May 24.
Brighton Beach (pictured) is the place to be in Melbourne on Tuesday as temperatures rose more than they have been in months
The Melburnians are also expected to congregate at St Kilda beach (pictured) on Tuesday
Sydney residents need to make the most of warm days this week as temperatures are about to fall on Sunday
McIntosh said the heat was being carried through the Sydney basin by a trough.
A cold wave is expected on Sunday, with temperatures falling significantly to 17C, McIntosh said.
Rains are also expected.
It may be time to go to the beach on Saturday before a great change arrives on Sunday in Sydney.
For the rest of Australia, Brisbane will remain sunny in the mid-20s before reaching a peak of 27 this weekend.
The hottest day in Hobart this week will be Tuesday with 23C. Darwin will remain humid in the mid-30s, while Adelaide will reach a maximum of 23 degrees C on Friday.
In the west, Perth will be much cooler with temperatures that will remain below 20ºC until the weekend.
AFL fans should bring their raincoats and umbrellas to the MCG (pictured) this Saturday night
PROGNOSIS FOR THE WEEK AHEAD
WEDNESDAY: Min. 14, Max. 28
THURSDAY: Min 13, Max 22
FRIDAY: Min. 12, Max. 24
WEDNESDAY: Min. 12, Max. 19
THURSDAY: Min. 12, Max. 19
FRIDAY: Min. 12, Max. 19
WEDNESDAY: Min 8, Max 18
THURSDAY: Min 10, Max 18
FRIDAY: Min. 9, Max. 19
WEDNESDAY: Min. 12, Max. 25
THURSDAY: Min. 12, Max. 26
FRIDAY: Min 13, Max 26
WEDNESDAY: Min 8, Max 17
THURSDAY: Min 8, Max 19
FRIDAY: Min. 10, Max. 22
WEDNESDAY: Min. 9, Max. 19
THURSDAY: Min 8, Max 18
FRIDAY: Min 11, Max 23
WEDNESDAY: Min 8, Max 15
THURSDAY: Min 9, Max 17
FRIDAY: Min. 11, Max. 18
WEDNESDAY: Min 23, Max 32
THURSDAY: Min 23, Max 34
FRIDAY: Min 22, Max 35
Source: Office of Meteorology