There are still two weeks left of the 2020/21 summer, and while you'd hardly know it in some parts of eastern Australia, South Australia is turning on extremely summery weather, with temperatures trending towards 40°C in many areas.

Adelaide had reached 35.1°C by 12:40 pm on Wednesday, on its way to a predicted top of 37°C.

Interestingly, the hottest spot in SA around lunchtime was Ceduna, on the west coast. It was 38.2°C at 12:40 pm, about half a degree warmer than typical hotspots like Oodnadatta in the north of the state.

As the image above shows, the heat is being caused by a hot airmass moving into South Australia from Western Australia ahead of an approaching low pressure trough.

The fact that the hottest air is still situated in the west of the state means that hot temps will stick around for at least another day or so - with a second straight day of 37°C tipped for Adelaide on Thursday.

As is usual with weather coming from the west. Victoria should be the next state to warm up after South Australia in coming days, although nothing warmer than 33°C is on the cards for Melbourne.

You'd say it would be pefect tennis weather, but we've just watched Ash Barty lose her quarter final while writing this story, so we're not really in the mood for tennis anymore.