Sydney Weather in September – Average Temperature and Rainfall
- High
- 20.9°
- Low
- 10.6°
- Rainfall
- 54 mm
- Rainy season
- 7d
- max
- 34.0°
- min
- 4.8°
September
- Early
- 20.0° 16.2 mm
- Mid
- 21.6° 19.8 mm
- Late
- 21.2° 17.9 mm
Summary
The climate figures for Sydney are averaged from 2016–2025 observations (10 years). Annual rainfall averages about 1,019 mm.
The rainy season runs January–March. The wettest month is March with 157.2 mm across 16 rain days; the driest is September at just 54 mm.
The hottest month is January (average high 26.6°C) and the coolest is June (16.8°C).
The most comfortable time to visit Sydney is September — less rain and milder heat.
Monthly averages
Common questions
Will it rain in Sydney today?
No. The chance of rain today is only about 65%.
How hot is it in Sydney today?
Between 17°C and 21°C, with a felt maximum of 21°C.
What is the weather in Sydney tomorrow?
Tomorrow: overcast, 14–22°C, with a 2% chance of rain.