Australians should prepare to swelter with every capital city set to have at least one day in the high 30s this week.
The nationwide heatwave comes as a “hot air mass” moves across the country, Weatherzone meteorologist Craig McIntosh told 9news.com.au.
“A trough which will move across Australia, dragging hot air ahead of it,” Mr McIntosh said.
“Adelaide and Melbourne will be hottest on Wednesday, as a hot air mass is driven over the region by North North-West winds.
“Heaps of hot air is building up in the interior and it’s being pushed over Adelaide and Melbourne over the coming days peaking on Wednesday before a cold front brings relief.”
It won’t be too hot in Melbourne today with only a maximum of 23C expected, but that is expected to climb as the week progresses.
“Melbourne’s forecast top of 36 degrees on Wednesday would be 12 degrees warmer than any other day so far this month and the city’s hottest day since February,” Weatherzone meteorologist Ben Domensino said.
In Adelaide tops of 30C, 36C and 37C are predicted for today, tomorrow and Wednesday respectively.
Both cities will have some relief by Thursday with a southerly change bringing the mercury back down to the mid-20s.
Mr McIntosh said the hot air mass will “push up into the ACT and NSW” after moving on from Adelaide and Melbourne.
In Canberra the mercury is expected to sit in the low- to mid-30s all week, and Sydney is already starting to warm up today with a high of 26C expected, but by Wednesday the mercury should rise to 29C, and again to 34C on Thursday.
“Eastern Sydney is not likely to go…