More than 42,000 people remained without power across southeast Queensland on Thursday as the state recorded higher-than-average temperatures.
On Friday in the Northern Territory, it is predicted to reach 40C in Katherine and 43C in Tennant Creek.
Marble Bar in WA’s Pilbara region may reach 49C on Saturday, and temperatures up to 45C are expected there for the next six days.
”In the Northern Territory, low to severe-intensity heatwave conditions cover most areas,” the bureau said in a statement.
”Locally, extreme heatwave levels are forecast around Darwin where warm minimums are leading to uncomfortable nights.
”In Queensland, low to locally severe heatwave conditions are building along the east coast, including Brisbane, the Sunshine Coast and areas surrounding Cairns.”
Forecasters say people in the worst-affected areas should stay indoors, close windows and blinds to keep heat out of homes and seek out fans or air conditioners to keep cool.
Heatwave conditions are predicted to continue in the NT and WA, while in Queensland the temperature is expected to fall from Saturday.