Warning map emerges as Australia heats up – here’s how hot it will be in Sydney, Brisbane and Melbourne

Australians will be working up a sweat on a hot and windy day on Sunday as much of the country plunges into a heat wave.

It could feel like a summer day, with temperatures in the tri-state area on Sunday in the mid-30s, although scattered showers and storms could bring temperatures down.

Temperatures will rise to 35°C throughout much of northern Australia.

Light winds will reach a maximum speed of 15-20 km/h in the middle of the day before easing in the late afternoon.

Residents of Robbourne in northern WA are set to endure the worst, with the mercury expected to reach 40 degrees over the next three days.

Queenslanders will also see temperatures in the 20s to 30s, with Cairns forecast to reach 30C throughout the day, although cloud cover will take some of the heat off.

Residents in south-east Queensland are clearing away debris after a severe storm swept through the region.

Heavy rain and strong winds lashed the region with hail the size of golf balls, recorded in suburbs including Buna and Beaudesert.

Sydney residents are expected to experience mostly hot weather, reaching 32C, with a slight chance of rain during the afternoon.

The Australian Bureau of Meteorology is warning Australians against slipping and plopping.

“Sun protection is recommended from 8:50 a.m. to 4:20 p.m., with a UV index predicted to reach 9 (very high),” the company’s website says.

The situation for Sydney beachgoers is being made worse by the “invasion” of blue boots.

Hundreds of venomous stingers washed up on Bronte Beach on Wednesday, putting swimmers at risk of painful stings.

Victoria, Tasmania and South Australia are also expecting mercury levels to rise.

The Bureau of Meteorology said it would be very warm in the southern states, with gusty winds in all three states.

Perth and south-west WA have experienced drier-than-usual weather over the past two years, increasing the likelihood of bushfires.

Perth has just had four days of temperatures above 30C and WA residents have been warned of a long, hot summer ahead.

“The bushfire safety campaign started earlier than usual and residents were encouraged to download the app to stay prepared,” Sky News Weather reported.