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 Monday 12 October 2026.

Weather Situation

A fresh southerly change is forecast to arrive late Monday night or early Tuesday morning as a cold front moves across Sydney Waters. Southerly winds will then gradually turn easterly mid to late this week as a strong high pressure system passes to the south of the state. The high will then enter the Tasman Sea and become slow-moving, maintaining east to northeasterly winds through the weekend.

Forecast for Monday until midnight

Winds
North to northwesterly about 10 knots becoming westerly in the evening.
Seas
Below 0.5 metres.
Weather
Cloudy. 80% chance of showers. The chance of a thunderstorm.

Tuesday 13 October

Winds
West to southwesterly below 10 knots tending south to southwesterly 10 to 15 knots before dawn then tending south to southeasterly 15 to 25 knots in the early morning.
Seas
Below 0.5 metres.
Weather
Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the morning.

Wednesday 14 October

Winds
Southerly 20 to 25 knots increasing to 20 to 30 knots before dawn then decreasing to 15 to 25 knots in the early morning.
Seas
Below 0.5 metres.
Weather
Cloudy. 50% chance of showers.

Thursday 15 October

Winds
Southerly 10 to 15 knots turning east to southeasterly during the morning.
Seas
Below 0.5 metres.
Weather
Cloudy. 70% chance of showers.

Friday 16 October

Winds
Easterly 15 to 20 knots turning northeasterly during the evening.
Seas
Below 0.5 metres.
Weather
Cloudy. 80% chance of showers.

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 Monday.

Product IDN11013