The warm spell is projected to intensify over Western Australia starting this weekend, before extending into southern, central, and southeastern regions of Australia in the coming week.

Weatherzone forecasts indicate that temperatures in Western Australia could soar into the low to mid-40s by Monday.

By Tuesday, this heatwave is anticipated to move into South Australia and central Australia.

As the week progresses, the system is set to reach Victoria and New South Wales by Wednesday and Thursday.

While the most intense heat is expected inland, major cities are also likely to experience elevated temperatures.

Temperatures are expected to be hotter in the regional Victorian city of Mildura, with the potential for a 45-degree day on Thursday next week.

“It’s too early to know exactly how hot this air mass will be as it spreads across Australia next week,” Weatherzone meteorologist Ben Domensino said.

“However, numerous computer models suggest temperatures could reach around 45 to 46 degrees in parts of WA, SA, Vic and NSW, with some spots possibly reaching about 48 degrees.

“The hottest weather over the coming week will occur inland, away from Australia’s state capital cities, but the major cities won’t completely escape the heat.”

Heatwave conditions are expected to impact parts of every state and territory next week but the highest temperatures are likely to be felt in WA, South Australia, Victoria and Tasmania.