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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Aussie Insightly Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Rossmore lies in Sydney’s south‑west, where summer temperatures often run a few degrees higher than the CBD before cooling more quickly overnight. The live forecast above shows current conditions for this Camden‑area suburb, which sits on the edge of the Nepean floodplain north of Badgerys Creek.
What makes Rossmore’s weather distinct from Sydney’s coast?
Rossmore misses the coastal cloud and sea breezes that moderate the eastern suburbs, so summer days here are hotter and winter nights clearer and cooler. The suburb falls in a recognised storm corridor across western Sydney, meaning afternoon thunderstorms roll in regularly from November through March. Checking the sydney weather forecast alone can be misleading — conditions at Rossmore are often closer to penrith weather or wollongong weather in terms of temperature extremes and storm timing.
How much rain does Rossmore get, and when is the storm risk highest?
Rainfall at Rossmore averages around 800 millimetres a year, with a distinct peak during late summer and autumn. The rossmore weather radar (best viewed through the Wollongong Appin network) shows that storm cells frequently develop over the Blue Mountains and intensify as they track south‑east across the suburb. If you need up‑to‑the‑minute tracking, the rossmore weather hourly updates from the Bureau of Meteorology give the best local picture for planning your day around the weather.
What is the best weather radar for Rossmore?
The Wollongong (Appin) radar offers the clearest local view of approaching storms, especially for cells developing over the Southern Highlands. The Sydney (Terrey Hills) radar is useful but can miss lower‑level activity due to the distance.
Does Rossmore experience frost in winter?
Yes. Rossmore’s inland valley position allows temperatures to drop sharply on clear winter nights. Light to moderate frost is common in July and August, particularly in low‑lying pockets near the Georges River.
How does Rossmore’s weather compare to Camden’s?
Rossmore and neighbouring Camden share a very similar climate. Rossmore can be marginally cooler overnight due to its slightly lower elevation and proximity to the Nepean floodplain, but daytime temperatures are practically identical.