Oyster Bay Weather Forecast
- 15
- 17
Cloudy
- 15
- 18
Cloudy
- 13
- 20
Partly cloudy
- 13
- 23
Sunny
- 15
- 28
Sunny
- 19
- 26
Showers
- 16
- 21
Shower or two
Today 27 Sep Sydney
Cloudy. Slight chance of a shower. Winds south to southeasterly 15 to 20 km/h.
Sydney Enclosed Waters
Sydney Harbour, Pittwater and Botany Bay- Wind
- Southeasterly 15 to 20 knots. Squalls possible with the wind change.
- Seas
- Below 0.5 metres.
- Weather
- Cloudy.
- Weather Situation
- Fresh to strong south to southeasterly winds lie over Sydney Waters in the wake of a cold front. A ridge of high pressure will build over the coastal waters through the early days of the week, turning winds north to northeasterly over Sydney waters through to midweek.
Oyster Bay Temperature Statistics View More
September Temperature
Sydney Airport (10km)
Lowest 18 September, 2026
9.1 °CAverage September
18.3 °CHighest 20 September, 2026
32.7 °C
Climate (2021–2026)
Sydney Airport (10km)
Average Low 2021–2026
15 °CAverage 2021–2026
18.8 °CAverage High 2021–2026
23.5 °C