Sylvania Waters Weather Forecast
- 17
- 22
Clear
- 17
- 24
Partly cloudy
- 17
- 28
Mostly sunny
- 17
- 19
Showers
- 15
- 17
Shower or two
- 15
- 19
Possible shower
- 13
- 22
Sunny
Today 24 Sep Sydney
Clear. Winds northeasterly 20 to 30 km/h becoming light in the late evening.
Sydney Enclosed Waters
Sydney Harbour, Pittwater and Botany Bay- Wind
- Northeasterly 15 to 25 knots decreasing to 10 to 15 knots in the late evening.
- Seas
- Below 0.5 metres.
- Weather
- Clear.
- Weather Situation
- A high pressure system over the Tasman Sea directs an east to northeasterly flow through the Sydney Waters. Winds will freshen and tend more north to northeasterly today and Friday as the high slips further to the east. A cold front and trough will then enter the Tasman Sea during the weekend, bringing a southerly change that will pass through the Sydney Waters early Sunday.
Sylvania Waters Temperature Statistics View More
September Temperature
Sydney Airport (9km)
Lowest 18 September, 2026
9.1 °CAverage September
17.9 °CHighest 20 September, 2026
32.7 °C
Climate (2021–2026)
Sydney Airport (9km)
Average Low 2021–2026
15 °CAverage 2021–2026
18.8 °CAverage High 2021–2026
23.5 °C