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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Down Under Brief 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 weather over the next 14 days will bring a mix of late-summer warmth and early-autumn shifts, with daytime highs around the low 30s Celsius and a few showers possible around the weekend. The live forecast above shows Sydney’s conditions, but for Perth the Bureau of Meteorology expects mostly sunny days giving way to a cooler, showery change from about day 10 onward.
What’s driving the pattern for the next fortnight?
A slow-moving ridge over the Bight is holding hot inland air across the Swan Coastal Plain for the first week, pushing daytime temperatures into the low-to-mid 30s. A weak trough should brush the southwest corner around day 6–7, bringing an afternoon storm chance, then a more substantial cold front arrives from the Indian Ocean around day 10–12, dropping maximums back to the mid-20s and delivering patchy rain to the Perth metro area and hills.
How reliable are the 14-day outlooks for Perth?
Confidence is highest for the first 7 days, where model agreement is strong on the hot ridge. From day 8 onward, the positioning of the front varies between the GFS and ECMWF models, so the bom 14 day forecast perth should be checked daily. For a broader view, the perth weatherzone 14 day forecast and weather perth 14 days accuweather offer alternative timelines, but the BOM remains the authoritative source for warnings.
Will the 28 day weather forecast perth show the same shift?
The 28 day weather forecast perth products often smooth out individual troughs. They can indicate a general cooling trend later in March, but day-to-day details beyond 14 days are low confidence — stick with the 7-day outlooks for timing.
Where can I find the perth 21 day forecast bom?
The Bureau of Meteorology issues an experimental 21-day outlook on its website, updated each Thursday. For practical planning, the perth 21 day forecast bom is best used as a trend guide rather than a precise prediction.
What about weather perth 21 days in spring?
This page focuses on the current weather perth 21 days outlook for late summer. In spring, the same 21-day products show the transition from sea-breeze days to frontal rain — the BOM’s long-range forecast is a useful starting point.
For more Western Australian conditions, explore the Australia weather hub, or compare with Sydney Weather and Melbourne Weather. Stay alert to any Severe Weather Warning issued during the change later in the fortnight.