Sydney Weather in September
In September, Sydney averages a high of 21°C (69°F) and a low of 12°C (54°F), based on 55 years of historical weather data from SYDNEY (OBSERVATORY HILL).
21°C
Average high
69°F
12°C
Average low
54°F
34°C
Record high
94°F · 2000
3°C
Record low
37°F · 1971
What to Expect in Sydney in September
Typical September days in Sydney reach 21°C (69°F) during the afternoon and cool to around 12°C (54°F) overnight. On average, measurable rain falls on about 30% of days this month. Over the past 55 years, September temperatures in Sydney have ranged from a record high of 34°C (2000) down to a record low of 3°C (1971).
For a day-by-day look or other months, see the full Sydney weather history.