“Right now there’s just a lot of really hot air sitting over the continent and wherever the pattern moves, it shifts the heat. At the moment it’s not really going anywhere, that’s the problem,” he said.

“It’s also been very dry - so no weather and clouds to give that bit of relief. It just gets hotter and hotter ... we haven’t really had anything to flush away the heat either - no rain bands, no tropical cyclones - so all that heat is just sitting there.

“Essentially all our warm areas are going to make their way down a surface trough along the coast of WA, and that’s going to pull all of that heat down to Perth,” he said.

Around the state, the South West and Great Southern regions are also expected to feel the burn, with the Goldfields-Esperance, Mid West and Wheatbelt regions also in for a scorcher.

Albany will experience a significantly milder Sunday at a top of just 32 degrees, while Marble Bar is due for its regular Sunday forecast of 43 degrees.