Australian Government

Bureau of Meteorology


Coastal Waters Forecast 

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IDN11003

Australian Government Bureau of Meteorology
New South Wales

Coastal Waters Forecast for New South Wales
Central Zones: Seal Rocks to Ulladulla

Issued at 4:00 am EDT on Tuesday 18 November 2025
for the period until midnight EDT Thursday 20 November 2025.

Please be aware
Wind 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.

Warning Information

For latest warnings go to www.bom.gov.au, subscribe to RSS feeds, call 1300 659 210* or listen for warnings on relevant TV and radio broadcasts.

Weather Situation

A ridge extends across the state from the west. Fresh northeasterly winds will develop later today as the ridge extends to the Tasman Sea and a high pressure system forms within it. The next trough will cross the southern and central parts of the coast midweek and will bring another south to southeasterly wind change in its wake, before stalling about Hunter or Mid North Coast later in the week.

Hunter Coast: Seal Rocks to Broken Bay

Forecast for Tuesday 18 November until midnight

Winds: West to southwesterly 10 to 15 knots becoming variable about 10 knots in the middle of the day then becoming northeasterly 15 to 20 knots in the early afternoon. Seas: Around 1 metre, increasing to 1 to 1.5 metres inshore by early evening. Swell: Southerly 1 to 1.5 metres. Weather: Sunny.

Forecast for Wednesday 19 November

Strong Wind Warning for Wednesday for Hunter Coast

Winds: North to northeasterly 15 to 25 knots, reaching up to 30 knots in the late evening. Seas: 1 to 2 metres. Swell: Southerly around 1 metre. Weather: Sunny.

Forecast for Thursday 20 November

Winds: Northerly 20 to 30 knots shifting south to southeasterly 10 to 15 knots during the afternoon. Seas: 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres during the morning. 1st Swell: Northeasterly around 1 metre inshore, increasing to 1 to 1.5 metres offshore south of Port Stephens during the morning. 2nd Swell: Southerly around 1 metre. Weather: Mostly sunny morning. The chance of a thunderstorm in the afternoon and evening.

Sydney Coast: Broken Bay to Port Hacking

Forecast for Tuesday 18 November until midnight

Winds: West to southwesterly 10 to 15 knots becoming west to northwesterly below 10 knots in the morning then tending northeasterly 15 to 20 knots in the middle of the day. Seas: Around 1 metre, increasing to 1 to 1.5 metres by early evening. Swell: Southerly around 1 metre inshore, increasing to 1 to 1.5 metres offshore during the morning. Weather: Sunny.

Forecast for Wednesday 19 November

Winds: Northerly 15 to 20 knots turning northeasterly in the middle of the day. Winds reaching up to 25 knots offshore in the evening. Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning, then increasing to 1 to 1.5 metres during the afternoon. 1st Swell: Southerly around 1 metre. 2nd Swell: Northeasterly around 1 metre. Weather: Sunny.

Forecast for Thursday 20 November

Winds: Northerly 15 to 25 knots shifting south to southwesterly 10 to 15 knots during the morning then tending south to southeasterly 15 to 20 knots during the day. Seas: 1 to 2 metres, decreasing below 1 metre during the morning. 1st Swell: Northeasterly 1 to 1.5 metres, increasing to 1 to 2 metres during the morning. 2nd Swell: Southerly around 1 metre. Weather: Partly cloudy. The chance of a thunderstorm in the afternoon and evening.

Illawarra Coast: Port Hacking to Ulladulla

Forecast for Tuesday 18 November until midnight

Winds: Westerly 15 to 20 knots becoming variable about 10 knots in the morning then becoming north to northeasterly 15 to 20 knots in the middle of the day. Seas: Around 1 metre, increasing to 1 to 1.5 metres during the afternoon. Swell: Southerly 1 to 1.5 metres, decreasing to around 1 metre during the morning. Weather: Sunny.

Forecast for Wednesday 19 November

Winds: North to northeasterly 15 to 20 knots, reaching up to 25 knots offshore north of Port Kembla in the evening. Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning, then increasing to 1 to 1.5 metres during the afternoon. 1st Swell: Southerly around 1 metre. 2nd Swell: East to northeasterly around 1 metre. Weather: Sunny.

Forecast for Thursday 20 November

Winds: Northwest to northeasterly 15 to 20 knots tending southeast to southwesterly during the morning. Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning. 1st Swell: Northeasterly 1 to 2 metres, decreasing to 1 to 1.5 metres during the morning. 2nd Swell: Southerly around 1 metre. Weather: Partly cloudy. 50% chance of showers. The chance of a thunderstorm in the afternoon and evening.

The next routine forecast will be issued at 10:00 am EDT Tuesday.

* Calls to 1300 numbers cost around 27.5c incl. GST, higher from mobiles or public phones.

Check the latest Coastal Waters Forecasts for information on wind, wave and weather conditions for neighbouring coastal zones.