Oyster Bay Weather Forecast
- 17
- 29
Very windy. Partly cloudy
- 15
- 18
Showers
- 14
- 18
Cloudy
- 13
- 20
Cloud clearing
- 14
- 24
Sunny
- 16
- 28
Sunny
- 18
- 27
Shower or two
Today 26 Sep Sydney
Partly cloudy. Slight chance of a shower. The chance of a thunderstorm. Winds southerly 25 to 35 km/h increasing to 30 to 45 km/h in the evening.
Sydney Enclosed Waters
Sydney Harbour, Pittwater and Botany Bay- Wind
- Southerly 20 to 30 knots increasing to 25 to 35 knots in the late evening.
- Seas
- Below 0.5 metres.
- Weather
- Partly cloudy. The chance of a thunderstorm in the late afternoon and evening.
- Weather Situation
- A southerly change arrives over Sydney Waters this evening as a cold front and trough enters the Tasman Sea. A high pressure centre will then move across Tasmania early next week, turning winds east to northeasterly over the Sydney Waters for the early days of the week.
Oyster Bay Temperature Statistics View More
September Temperature
Sydney Airport (10km)
Lowest 18 September, 2026
9.1 °CAverage September
18.1 °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