One of Australia’s hottest towns has sweltered through a brutal four-week stretch of daily maximum temperatures above 41°C that has caused birds to fall from trees.

The temperature peaked at 45°C in Marble Bar, in northwest Western Australia on Friday, with suggestions the record books would soon be rewritten if the hot spell continued.

Caravan park manager Cath Nation said the extreme heat was tough on the outback town and most people retreated indoors by about 9am each day to escape it.

The wildlife hasn’t been so lucky.

“We’ve got birds dropping out of trees,” she told AAP.

“I was just taking a walk down near the camp kitchen and there were dead birds laying there, carked it, keeled over, too hot.

“The is an upside to it all, the washing dries in about 10 minutes.”

The tiny town of about 630 people has laboured through daily maximum temperatures of more than 36°C since September 9 and 43°C since December 19.

Meteorologist Jessica Lingard said Marble Bar’s record for days above 43°C in a row was 27. 

That happened in 2005 from January 6 to February 1. 

 “We’re nudging close to that record as we move through the weekend and into next week,” she said.

Temperatures in the town are expected to peak at 46°C on Saturday and Sunday amid heatwave conditions across most of WA.

Perth peaked at 36.5°C on Friday and temperatures on Saturday and Sunday are expected to climb to 41°C and 36°C, respectively.

The last time the city recorded a maximum temperature above 40°C was almost two years ago on February 5, 2022.

The city has had a fairly mild summer after an unprecedented heatwave sent temperatures soaring above 35°C for the best part of a week in November.

Lingard said both heatwaves had been caused by an “atmospheric traffic jam” which forced a trough to hover over the WA coast.

“When the trough sits on the coast we get bombarded with these hot dry northerly winds, which bring down all the hot air from the Pilbara and Gascoyne regions, all the way … into the southwest of the state,” she said.

Hot conditions are expected in much of the state’s southwest, with Busselton tipped to reach highs of 39°C on Saturday and 38°C on Sunday.

In the north, Broome is also forecast to swelter in the severe heatwave conditions with maximum temperatures of 34°C and above forecast until late next week.

Showers and gusty thunderstorms are likely in the Kimberley, through to Sunday.

Extreme and severe heatwave conditions are also predicted for parts of the Goldfields, with Laverton expected to climb to 42°C on Saturday, 41°C on Sunday and 39°C on Monday, when rain is also forecast.

–AAP