Weather December 9 2025. Warmer than average nights are very likely across almost all of australia with an increased chance of unusually high overnight temperatures nationwide. See the last few years weather in.

Warmer than average nights are very likely across almost all of australia with an increased chance of unusually high overnight temperatures nationwide. Get the monthly weather forecast for sydney, new south wales, australia, including daily high/low, historical averages, to help you plan ahead.