Home › Weather › Perth Cold Weather August 2025
Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Aussie Briefly Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Perth’s cold weather in August 2025 will see average maximums around 18°C and overnight lows dipping to 8°C, with several cold fronts sweeping across the Swan Coastal Plain. The live forecast above shows today’s conditions; expect crisp mornings and showery afternoons typical of late winter in the south-west.
How cold does Perth get in August?
August is Perth’s second-coldest month, with average daily maximums of 18.4°C and minimums of 8.3°C at the Metro station. Cold fronts from the Southern Ocean regularly bring rain and gusty south-westerly winds, especially across the hills east of the city. Clear nights inland can produce frost, particularly in the Swan Valley and outer suburbs.
What drives Perth’s winter chill?
Winter cold in Perth comes from a series of frontal systems that move across the Indian Ocean and hit the coast. These fronts drop temperatures quickly after sunset, and the city’s sandy soils lose heat fast. The Darling Scarp also traps cooler air on calm nights, making the inland suburbs notably colder than coastal areas like Cottesloe.
Does it snow in Perth during August?
No. Snow is extremely rare across the Perth metro area, but the Stirling Range and higher peaks of the Darling Scarp can occasionally see a light dusting. Frost is far more common on cold, clear mornings.
Is August Perth’s coldest month?
No, July is marginally colder (average max 17.9 °C, min 7.9 °C). August usually runs a degree or two warmer, though individual front days can feel just as bitter, especially with strong winds.
What should I wear for Perth cold in August?
Layered clothing works best – a thermal or long-sleeve shirt under a fleece or light jacket, plus a waterproof outer layer. Morning frosts call for a beanie and gloves, but afternoons often warm enough to shed layers.
Sources
For the full outlook on Perth’s winter, visit our Perth Weather page, or explore the Australia weather hub for regional forecasts.