The Weather On Christmas Day 2025. Get the monthly weather forecast for sydney, new south wales, australia, including daily high/low, historical averages, to help you plan ahead. High of 27°c, low of 20°c.

Early modelling indicates christmas day will see showers and thunderstorms up and down the eastern seaboard along with a potential cyclone tormenting the northern tropics. The 2025 australian weather calendar is now on sale!