Home › Weather › St Clair Weather
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.
Live data from Open-Meteo · updates automatically ·
St Clair is enjoying a settled, mild afternoon under partly cloudy skies, with the live forecast above showing a gentle westerly breeze and a comfortable high for this time of year. As a western Sydney suburb, it sits in the rain shadow of the Blue Mountains, often seeing less coastal cloud than the city centre.
Why does St Clair feel hotter than the coast in summer?
The suburb’s inland position, about 45 kilometres west of the Sydney CBD, cuts it off from the moderating sea breeze. On many summer days, the mercury climbs several degrees higher than at Observatory Hill. That’s why Sydney weather reports from the harbour can feel misleading for those living in the western suburbs like St Clair. The Bureau of Meteorology’s Penrith station, just a few kilometres north, provides the most reliable local data – bom st clair observations are actually drawn from there.
What does the longer-term outlook show?
The seven-day forecast points to a stable run, typical of autumn’s transition toward cooler nights. For anyone checking weather in saint clair nsw 10 days or a st clair weather 14 day forecast, the pattern suggests no major rain events, though a weak trough may bring a few showers mid-next week. The st clair weather radar (Terrey Hills radar) is your best tool for tracking any sudden changes – keep an eye on it if you’re planning outdoor work or sport.
Does St Clair get sea breezes in summer?
Rarely. The sea breeze from Botany Bay usually stalls around Parramatta or Liverpool. Only during strong easterly flows does it push all the way to St Clair, and even then it arrives late afternoon, offering brief relief.
What’s the difference between St Clair NSW and Lake St Clair weather?
Lake St Clair weather refers to Tasmania’s deep alpine lake, where conditions are cool, wet and changeable year-round. Very different from the warm, dry-inland climate of St Clair in Sydney’s west – two separate regions with distinct forecasts.
Where can I find local radar for St Clair?
The st clair weather radar is covered by the Bureau’s Terrey Hills radar (IDR713), located 35 km east. It gives good coverage for western Sydney, though distant storms may appear faint. For accurate real-time warnings, also check the official BOM page.