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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Southern Pulse Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Green Valley residents can expect a warm, mostly sunny day — the live forecast above shows a mild morning giving way to a hot afternoon, so plan outdoor tasks for early or late when the sun is less intense.
What’s driving Green Valley’s weather today?
A broad ridge of high pressure over the Tasman Sea is keeping skies clear across Sydney’s south‑west. This pattern, common in late summer, draws warm air inland from the coastal plain. Unlike suburbs right on the coast, Green Valley – around 35 kilometres south‑west of the Sydney CBD – typically sees afternoon temperatures a couple of degrees higher than Sydney weather at Observatory Hill. The combination of light north‑easterly breezes and clear skies will push the mercury up through the middle of the day.
How does Green Valley’s climate compare to nearby towns?
Green Valley sits in the drier, more continental pocket of Greater Western Sydney. Penrith weather often runs a few degrees hotter again due to its inland position, while weather greenacre (just to the north‑east) is slightly closer to the afternoon sea‑breeze. The Bureau’s observation site for this area is the Liverpool station (MWS), which records an average January maximum of 28°C. Green Valley’s own microclimate is shaped by the nearby Georges River and the open farmland to the west, meaning overnight lows can drop quickly after a hot day.
Does Green Valley get afternoon sea breezes like the coast?
No. Green Valley is too far inland – the sea‑breeze rarely reaches beyond Liverpool. Instead, a gentle north‑easterly off the Georges River provides some relief, but afternoons are consistently warmer than the CBD.
When is the wettest time of the year in Green Valley?
Late summer to early autumn (February–March) is the wettest period, driven by tropical moisture and east‑coast lows. Thunderstorms can develop quickly; keep an eye on Severe Weather Warning pages if you’re heading out.
Where can I check bom green valley observations?
The Bureau’s nearest automatic station is at Liverpool (BOM ID 067097). You can view live readings on the BOM website or use Weatherzone’s Green Valley page for a localised forecast.