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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Australia Focus Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Perth’s cold mornings are a hallmark of winter, with overnight temperatures often dipping into single digits under clear skies. The live forecast above shows just how brisk it can get, though daytime warmth usually follows as the sun strengthens.
Why do Perth mornings feel so cold?
Perth’s Mediterranean climate means winter nights are frequently clear and calm, allowing heat to radiate away from the ground. This radiational cooling, combined with dry air, can drop temperatures to around 4–8°C in the city and even lower in the outer suburbs. Frost is common on the Swan Coastal Plain, especially inland, but the sea breeze often moderates coastal areas by mid-morning.
How long will the cold mornings last?
Typically, the chilliest mornings occur from June through August, with July often the coldest month. As spring approaches, the overnight minimums gradually rise, though a cold snap can still arrive in early September. The live forecast above will show you the trend for the week ahead.
Does it ever snow in Perth on a cold morning?
No, snow is extremely rare in Perth. The city’s maritime influence and low elevation keep temperatures above freezing, even on the coldest mornings. Hail or frost is possible, but not snow.
Why is it colder inland than near the coast?
Inland suburbs like Armadale and Midland radiate heat faster overnight because they’re further from the moderating Indian Ocean. Coastal areas stay a few degrees warmer due to the sea’s stored warmth.
When should I expect the first cold morning of winter?
Typically from late May, after the first few strong cold fronts push across the southwest. The Bureau of Meteorology’s forecasts, including the live forecast above, will give you a week-by-week picture.