Heatwave expected as hot air mass moves across Australia

Tuesday, 16 December 2025 18:24

Temperatures are expected to climb across many of Australia's capital cities this week.

Temperatures are tipped to climb across many of Australia's capital cities this week as a hot air mass moves across the country.

A high pressure system centred to the south of Australia allowed a hot air mass to build over Western Australia in the past few days, according to Weatherzone meteorologist Ben Domensino.

"The heat was driven towards the west coast of WA on Sunday, causing Perth's maximum temperature to reached 40.1 degrees," Domensino said.

Temperatures are tipped to climb across many of Australia's capital cities this week as a hot air mass moves across the country.

"On Monday, Dalwallinu in the state's Central Wheatbelt reached 40.9 degrees, while Morawa to the southeast of Geraldton hit 42.6 degrees.

"The heat will intensify and spread towards the south of WA on Tuesday and Wednesday.

"Large areas of southern WA will see temperature reaching the low to mid 40s over the next two days, possibly hitting 46 degrees to the north of Eyre on Wednesday afternoon."

Temperatures are expected to rise in South Australia until Thursday, with Adelaide expected to reach 35 degrees tomorrow and 39 degrees on Thursday.

According to Weatherzone, Brisbane's maximum temperatures are expected to climb to the low-to-mid 30s from Friday as heat builds over southern Queensland.

Victorian residents will experience hot weather between now and Friday, with temperatures in the state's north predicted to reach the low 40s on Thursday and Friday.

Hot air is expected to linger over New South Wales and the Australian Capital Territory throughout the week.

Melbourne's maximum temperature is expected to hit 32 degrees tomorrow and 37 degrees on Thursday.

Temperatures will climb to about 29 degrees in Hobart tomorrow before cooling down on Thursday.

Meanwhile hot air is expected to linger over New South Wales and the Australian Capital Territory throughout the week.

Western Sydney could get close to 40 degrees on Friday, while Canberra could reach the low-to-mid 30s from tomorrow to Saturday.

The Bureau of Meteorology has issued a severe heatwave warning for parts of NSW including Illawarra, Southern Tablelands, Snowy Mountains, South West Slopes and Riverina.

The heat will be accompanied by rain and thunderstorms in parts of the country as moisture feeds into a low pressure trough on the western flank of the high pressure system.

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