“The record at the moment as it stands is four days in a row over 40 degrees and we’ve reached that three times in the past,” Bureau of Meteorology Duty Forecaster Jessica Lingard told 9News.
“It’s unprecedented that we’ve had five days in a row,” she said.
The high temperature reflects an ongoing heatwave throughout the whole of the state, which has now had a record 10 summer days above 40C.
Locals flocked to the beach in a desperate attempt to beat the heat.
Perth’s Cottesloe Beach was one of them, with people arriving early in the morning to nab their spot on the sand.
Ambulances were also stationed at beaches along the coast as temperatures continued to rise throughout the day and the mercury reached 41C by 2.30pm.
It marks a continuing trend of an unusually hot summer in the state.
Perth had its hottest Christmas Day on record, and just last week the equal hottest Australian day ever was recorded in Onslow, with temperatures reaching 50.7C.
The BoM warns the weather in WA is not going to be cooling down any time soon.
“There is a chance we could be seeing more of these systems as the look through the rest of the summer season, unless we get something to help flush out the heat,” Ms Lingard said.
But there will be some slight relief in the coming days.
“The trough that’s causing these hotter temperatures will be moving inland tomorrow [Sunday],” she said.
“So, from Monday we will start to see temperatures starting to decrease.”