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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Australia Current Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Check the live forecast above before you head out, then read on for what makes Picton’s weather tick – it’s a mix of coastal moderation from Sydney and inland valley effects that can surprise.
What drives Picton’s weather patterns?
Picton sits in the Wollondilly Shire, straddling the edge of the Southern Highlands. Its position about 80 kilometres south-west of Sydney means sea breezes often moderate summer heat, but the surrounding hills can trap cooler air overnight. In winter, clear skies allow frost, while summer thunderstorms are common when humid air pushes inland. For a longer outlook, check the Wollondilly weather 14 day forecast on our hub.
How does Picton compare to Sydney?
You’ll find Picton a few degrees cooler than Sydney in both summer and winter, especially at dawn. Rain totals are similar, but Picton’s valleys can see more localised downpours during spring and autumn. If you’re travelling to Sydney, expect a noticeable temperature jump once you leave the high ground.
Does Picton get much fog?
Yes, especially in autumn and winter. The nearby Nepean River and surrounding valleys trap moisture overnight, often producing thick fog that can linger until mid-morning. Check the live forecast above for visibility details.
When is the stormiest time in Picton?
Late spring and summer. Warm, humid north-easterlies collide with westerly changes, triggering thunderstorms. Some can be severe with hail or heavy rain, so keep an eye on severe weather warnings if you’re outdoors.
What’s the best month to visit Picton?
October and November offer mild days, fewer storms, and the bloom of the surrounding bushland. Autumn (March–May) is also pleasant, with clear skies and comfortable temperatures for exploring the historic town.