Residents expressed surprise and disappointment at the persistent cold and rain, which contrasted with expectations of a warm summer.

Perth experienced its coldest day in over 50 years on August 25, 2025, with a high of just 11.4°C, the lowest since July 1975, driven by a cold air mass and ongoing rain.

This day also marked the coldest August temperature ever recorded at the Perth weather station in Mt Lawley, surpassing the previous low of 12.1°C set in 2020, and if no warm weather occurs before 9 am on August 26, Perth could set a new record for the coldest August maximum temperature.

The unseasonably cold weather was caused by a cold front moving over the region, bringing very cold air from the South West and resulting in low temperatures across the South West Land division.

August 2025 is on track to break Perth’s wettest August record, with over 177mm of rain already recorded—exceeding the monthly average by nearly 50mm—and more rain expected, potentially surpassing the 2018 record of 186mm.

The city has experienced unusually high rainfall since June, July, and August, surpassing the average since 1996, with recent rainfall making August one of the wettest months on record.

Ice supplier Len Tarapacz reported that the extreme cold made handling ice difficult, as the weather hindered normal work conditions.

Hail also fell across Perth, with residents noting significant coverage on rooftops and roads, although no damage was reported.

Meteorologists predict that temperatures will gradually rise later in the week due to a high-pressure ridge, but minimum temperatures are expected to stay around 5-6°C, with sunnier days from Thursday or Friday.