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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Aussie Focus Hub Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Sadleir’s weather today is shown in the live forecast above – a quick snapshot of current conditions and the day ahead for this western Sydney suburb. The area sits inland, so it tends to be a few degrees warmer than the coast, with summer heat moderated by occasional sea breezes.
What is the typical climate in Sadleir?
Sadleir has a humid subtropical climate (Cfa under the Köppen classification), with warm to hot summers and mild winters. Rainfall is spread fairly evenly through the year, though late summer and early autumn often bring the heaviest falls from east-coast lows and thunderstorms. Winter days are generally sunny and crisp, with overnight temperatures occasionally dropping below 5°C.
When is the best time to visit Sadleir for outdoor activities?
Autumn (March to May) and spring (September to November) offer the most comfortable conditions for being outside. Daytime temperatures typically range from 18°C to 26°C, with lower humidity and fewer extreme heat events. Summer (December to February) can be very hot, with heatwaves pushing above 40°C, so plan outdoor activities for early morning or late afternoon.
Does Sadleir get severe storms?
Yes, especially in late spring and summer. Thunderstorms can bring heavy rain, hail and damaging winds. Western Sydney is also prone to heatwaves, so check the Bureau of Meteorology’s severe weather warnings during summer.
How does Sadleir’s weather compare to Sydney CBD?
Sadleir is generally 2–4°C warmer in summer and cooler in winter than the CBD because it is further from the coast. Rainfall is similar, though thunderstorms are more frequent due to the inland location.
Is the UV index high in Sadleir?
UV levels are very high from October to March, often reaching 10+ on clear days. Sun protection (hat, sunscreen, sunglasses) is recommended between 10am and 4pm, even on cloudy days.
Sources
For broader conditions across the state, visit our Australia weather hub or check the Sydney Weather page. Stay up to date with any hazardous conditions via the Severe Weather Warning page.