Monthly climate statistics for selected Australian sites produced by the Bureau of Meteorology.

The month of October boasts the highest average temperature, with a recorded maximum of °C | °F. temperature in Sydney at the beginning of July is As the month progressed, temperatures tended to moderately rise, reaching an average of September and October are the first months of spring, with mild to warm. Sydney's climate is generally cool to mild in September and mild in October. The month of January registers the most frigid.

The average temperature during this period reaches up to °C | °F, making it the hottest time of the. Sydney (Australia) weather in September ☀️ Accurate weather forecast for Sydney in September ⛅ Detailed forecast By month Current temperature "near me". The month of maximum warmth in a year is October. Check more longterm weather averages for Sydney in September before you book your next holiday.