Port Jackson Weather Forecast
- 17
- 21
Mostly clear
- 17
- 23
Becoming windy. Mostly sunny
- 18
- 30
Sunny
- 19
- 22
Sunny
- 19
- 36
Becoming windy. Mostly sunny
- 19
- 22
Possible shower
- 16
- 21
Shower or two
Today 18 Oct Sydney
Partly cloudy. Winds easterly 20 to 30 km/h decreasing to 15 to 20 km/h in the late evening.
Sydney Enclosed Waters
Sydney Harbour, Pittwater and Botany Bay- Wind
- Easterly 15 to 20 knots.
- Seas
- Below 0.5 metres.
- Weather
- Mostly clear.
- Weather Situation
- The winds are east to southeasterly about the local waters today with a high pressure system moving through western and southern New South Wales and a low pressure trough over the state's northeast. On Sunday, the winds tend gusty north to northeasterly in the afternoon and evening as the trough weakens and the high moves over the Tasman Sea. The next trough will bring a southerly change to Sydney either late Monday or early Tuesday.
Port Jackson Temperature Statistics View More
October Temperature
Sydney (Observatory Hill) (8km)
Lowest 3 October, 2025
12.1 °CAverage October
21.1 °CHighest 6 October, 2025
31.8 °C
Climate (2020–Present)
Sydney (Observatory Hill) (8km)
Average Low 2020–2025
14.7 °CAverage 2020–2025
18.3 °CAverage High 2020–2025
23.4 °C