The Heatwave Is Here: Aussies Prepare For Hottest October Day In Four Years

Australians are set to swelter as a heatwave moves across the country affecting almost every major city.

Melbourne is bracing for its hottest October day in four years, with the temperature forecast to reach 34 degrees on Thursday.

It won't be the hottest place in the state though, with Mildura in Victoria's north expected to reach a stifling 38 degrees.

The soaring temperatures, more than 10 degrees above average, have led to a total fire ban in the Mallee region.

"A high-pressure system over the Tasman Sea is directing northerly winds across Victoria and creating those hot inland temperatures," Richard Carlyon, BOM senior forecaster, told 10 daily.

He conceded that Melbournians are likely to be in for a restless nights sleep.

"It will be hot for most of the night," Carlyon said. "Any wind change is not moving in until tomorrow morning".

A cool change is expected from about  am, with the wind swinging to the south-west.


Adelaide will also be affected by the serious heat on Thursday, with the CBD expected to reach 37 degrees. Strong north to northwesterly winds also forecast.

Spare a thought for Tarcoola though, residents are in for 42 degrees.

The hot, dry and gust conditions have forced the Country Fire Service to declare 10 total fire bans.

They apply to: Northwest Pastoral, West Coast, Eastern Eyre Peninsula, Lower Eyre Peninsula, Flinders, Mid North, Mount Lofty Ranges, Yorke Peninsula, Kangaroo Island and Lower South East districts.

The good news is, a cool change is expected in the evening. Friday will feel a whole lot different, with a top of just 19 degrees forecast.

Sydney will be next in the firing line, with the city's west to swelter through 37-degree heat on Friday. The CBD itself is expected to be only slightly cooler at 36 degrees.

Those headed to Bondi and Coogee beaches to bet the heat be warned, the sweltering conditions coinciding with Sculpture by the Sea, so it will be packed.

As with the other two states, a cool change is expected to follow bringing a more manageable 31 degrees to Sydney on Saturday and 23 on Sunday.

The northwesterly winds are even likely to bring a dusting of snow to Alpine peaks.

Elsewhere in the country, Canberra is expected to reach 31 degrees on Thursday, the weather in Brisbane will linger in the high twenties before nudging 30 on the weekend, while Sunday will be Perth's hottest day of the week, reaching 33 degrees.