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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 ·
Blackett’s weather today, as shown in the live forecast above, brings a mix of sun and cloud typical of western Sydney’s late-summer pattern. The suburb, lying inland near the Nepean River and the Blue Mountains foothills, often sees temperatures a degree or two warmer than the city centre.
What is the typical weather pattern for Blackett?
Blackett sits in Sydney’s outer north-west, a region that experiences hot summers and mild winters. Summer afternoons frequently reach the low 30s Celsius, with occasional thunderstorms rolling in from the mountains. Winter mornings can drop to single digits, but daytime temperatures usually climb to a pleasant 16–18°C. The area receives moderate rainfall year-round, with a slight peak in late summer and early autumn.
How does Blackett’s location affect its weather?
Being inland and west of the coast, Blackett misses the moderating sea breeze that cools eastern suburbs. This means hotter summer days and cooler winter nights. The nearby Nepean River and surrounding bushland can also trap moisture, leading to patchy fog on calm winter mornings. For current conditions across the region, check the Sydney Weather page.
Does Blackett get much rain?
Blackett receives about 800–900 millimetres of rain annually, slightly less than Sydney’s city average. Most rain falls in late summer and early autumn, often from afternoon thunderstorms. Winters are generally drier.
Is Blackett prone to heatwaves?
Yes, like much of western Sydney, Blackett can experience heatwaves when a persistent high-pressure system traps hot air inland. Temperatures may exceed 40°C for several days, particularly in December and January.
When is the best time to visit Blackett?
Autumn (March to May) offers the most comfortable weather, with warm days around 22–26°C and cooler nights. Spring is also pleasant, though October can bring gusty winds and early storms.