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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Oz Monitorly Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Hornsby currently sees 18–22°C with light north-easterly winds, according to the live forecast above. This aligns with late-autumn averages, although afternoon showers may develop as a coastal trough drifts inland.
What’s the outlook for Hornsby this week?
Maximums range 19–24°C over the next seven days, with morning lows between 11–15°C. The weather in Hornsby tomorrow should peak near 22°C before a cool change arrives Wednesday, dropping the top by around four degrees. A weak front may bring 2–5 mm of rain on Thursday; otherwise, mostly fine conditions hold.
How are the longer-term and radar trends?
The Hornsby weather 14 days and Hornsby weather 30 day forecast both point to a drying pattern from the second week onwards, as high pressure rebuilds over the Tasman. For immediate situational awareness, the Hornsby weather radar (Sydney composite) shows patchy light returns near the Hawkesbury; nothing severe is expected. The weather in Hornsby 10 days summary indicates stable temperatures, with only one day likely exceeding 25°C.
Where can I find official BOM weather for Hornsby?
Use the Bureau of Meteorology’s site for bom weather Hornsby observations and warnings. They publish the latest hourly readings, synoptic charts, and a Hornsby weather 7 day forecast updated at least twice daily.
Does Hornsby have a dedicated weather station?
The closest automatic station is at Sydney Olympic Park (about 12 km south), providing reliable Hornsby weather hourly data. Some local community stations also report temperature and humidity, but the BOM remains the authoritative source.
When is the best time to visit Hornsby for clear skies?
Late winter (August–September) typically offers the most stable conditions, with lower humidity and fewer rain days. The Hornsby weather 30 day forecast often shifts to a drier signal in those months compared to autumn’s changeable pattern.
For broader regional outlooks, check our Australia weather hub or the dedicated Sydney Weather page for detailed coastal trends that often affect Hornsby’s conditions.