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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Oz Insight Lab Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Leonay’s weather right now is shown in the live forecast above. Located on the Nepean River in Sydney’s western foothills, Leonay experiences warm summers and cool winters, with afternoon sea breezes arriving later in the day.
What’s the best time to visit Leonay?
March to May and September to November offer the most comfortable conditions—mild days and clear skies. Summer (December–February) is hot, often exceeding 35°C, so pack light clothing, a hat and sunscreen. Winter (June–August) is crisp but sunny; bring a jacket for mornings and evenings. School-holiday periods (especially April and October) see pleasant temperatures and fewer crowds than coastal spots.
How does Leonay’s weather compare with nearby towns?
Leonay sits close to Penrith weather patterns—both are typically a few degrees warmer than central Sydney weather due to the inland location. Katoomba weather in the Blue Mountains can be 5–10°C cooler, so if you’re heading to the escarpment, dress in layers. The Nepean River can also create local fog or cooler pockets in winter mornings.
Does Leonay get frost in winter?
Yes, especially on clear, calm mornings. Frost is common in low-lying areas near the Nepean River. Cover sensitive plants and allow extra time for car windscreens to clear.
Are there bushfire risks around Leonay?
During summer hot, dry north-westerly winds can elevate fire danger. Check the live forecast and local alerts on days with strong winds and low humidity. Always have a fire plan.
Can I swim in the Nepean River year-round?
The river warms to a pleasant 22–26°C in summer. In winter water temperature drops to 12–15°C, making swimming less comfortable. Always observe safety signs and river conditions.