Sydney Enclosed Waters Forecast: Sydney Harbour, Pittwater and Botany Bay

View the current warnings for New South Wales

Forecast issued at 4:05 pm EDT on Friday 12 December 2025.

Weather Situation

Winds will tend east to northeasterly from today as a high pressure system gradually drifts into the Tasman Sea, with winds turning northerly over the weekend. The next southerly change is overnight Sunday.

Forecast for Friday until midnight

Winds
Easterly 10 to 15 knots turning northeasterly in the late afternoon.
Seas
Below 0.5 metres.
Weather
Partly cloudy. 50% chance of showers. A thunderstorm likely.

Saturday 13 December

Winds
Variable about 10 knots becoming northeasterly 15 to 20 knots in the middle of the day then becoming northerly below 10 knots in the late evening.
Seas
Below 0.5 metres.
Weather
Mostly sunny. The chance of a thunderstorm in the afternoon and early evening.

Sunday 14 December

Winds
North to northwesterly below 10 knots tending east to northeasterly 15 to 25 knots in the middle of the day then shifting southerly 25 to 30 knots in the late evening.
Seas
Below 0.5 metres.
Weather
Partly cloudy. 50% chance of showers. The chance of a thunderstorm in the early morning.

Monday 15 December

Winds
Southerly 20 to 30 knots decreasing to 15 to 20 knots during the morning then tending southeasterly 10 to 15 knots during the day.
Seas
Below 0.5 metres.
Weather
Cloudy.

Tuesday 16 December

Winds
Southeasterly 10 to 15 knots.
Seas
Below 0.5 metres.
Weather
Cloudy.

Please be awareWind and wave forecasts are averages. Wind gusts can be 40 per cent stronger than the forecast, and stronger still in squalls and thunderstorms. Maximum waves can be twice the forecast height.

The next routine forecast will be issued at 10:00 pm EDT Friday.

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