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 10:00 pm EST on Monday 14 September 2026
for the period until midnight EST Thursday 17 September 2026.

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

Northerly winds will increase during today before a trough brings a southerly change to the far south in the evening. This southerly change will continue to move north along the coast on Tuesday and then strengthen as a cold front reaches the Tasman Sea. After this, southerly winds will persist as a ridge of high pressure extends across from the west.

Hunter Coast: Seal Rocks to Broken Bay

Forecast for Monday 14 September until midnight

Strong Wind Warning for Monday for Hunter Coast

Winds: Northerly 15 to 20 knots, reaching up to 30 knots offshore. Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres offshore. Swell: Southerly around 1 metre inshore, increasing to 1 to 1.5 metres offshore north of Port Stephens. Weather: Clear.

Forecast for Tuesday 15 September

Strong Wind Warning for Tuesday for Hunter Coast

Winds: North to northwesterly 15 to 25 knots shifting south to southeasterly in the late morning. Winds reaching up to 30 knots early in the morning and again in the late evening. Seas: 1.5 to 2.5 metres, decreasing below 1 metre around midday, then increasing to 1 to 1.5 metres later in the evening. 1st Swell: Southerly around 1 metre inshore, increasing to 1 to 1.5 metres offshore south of Port Stephens later in the evening. 2nd Swell: Northeasterly around 1 metre inshore, increasing to 1 to 1.5 metres offshore north of Port Stephens during the morning. Weather: Sunny day. 70% chance of showers in the evening. The chance of a thunderstorm in the late afternoon and evening.

Forecast for Wednesday 16 September

Winds: Southerly 25 to 30 knots. Seas: 2.5 to 3 metres. Swell: Southerly 2 to 3 metres, increasing to 3 to 4 metres around midday. Weather: Cloudy. 90% chance of showers. Caution: Large and powerful surf conditions in the afternoon and evening are expected to be hazardous for coastal activities such as crossing bars by boat and rock fishing.

Forecast for Thursday 17 September

Winds: Southerly 20 to 30 knots decreasing to 10 to 15 knots during the evening. Seas: 2 to 3 metres, decreasing to 1 to 2 metres during the afternoon. Swell: Southerly 3 to 4 metres, decreasing to 2.5 to 3 metres during the afternoon. Weather: Cloudy. 80% chance of showers. Caution: Large and powerful surf conditions in the early morning are expected to be hazardous for coastal activities such as crossing bars by boat and rock fishing.

Sydney Coast: Broken Bay to Port Hacking

Forecast for Monday 14 September until midnight

Winds: Northerly 10 to 15 knots, reaching up to 25 knots offshore. Seas: Around 1 metre, increasing to 1.5 to 2 metres offshore. Swell: Southerly below 1 metre. Weather: Clear.

Forecast for Tuesday 15 September

Strong Wind Warning for Tuesday for Sydney Coast

Winds: Northerly 15 to 20 knots shifting southerly 15 to 25 knots in the late morning. Winds reaching up to 30 knots in the evening. Seas: 1 to 2 metres, decreasing to 1 metre during the morning, then increasing to 1.5 to 2.5 metres by early evening. 1st Swell: Southerly below 1 metre, increasing to 1.5 metres later in the evening. 2nd Swell: Northeasterly around 1 metre, increasing to 1 to 1.5 metres during the morning, then decreasing to around 1 metre around midday. Weather: Sunny day. 70% chance of showers in the late afternoon and evening.

Forecast for Wednesday 16 September

Winds: Southerly 25 to 30 knots. Seas: 2.5 to 3 metres. Swell: Southerly 2 to 3 metres, increasing to 3 to 4 metres around midday, then decreasing to 3 metres during the afternoon. Weather: Partly cloudy. 80% chance of showers offshore, 50% chance elsewhere. Caution: Large and powerful surf conditions in the afternoon and evening are expected to be hazardous for coastal activities such as crossing bars by boat and rock fishing.

Forecast for Thursday 17 September

Winds: Southerly 20 to 30 knots decreasing to about 10 knots during the evening. Seas: 2 to 3 metres, decreasing to 1 metre during the evening. Swell: Southerly 2 to 3 metres. Weather: Partly cloudy. 60% chance of showers.

Illawarra Coast: Port Hacking to Ulladulla

Forecast for Monday 14 September until midnight

Winds: Northerly 10 to 15 knots, reaching up to 20 knots offshore. Seas: Around 1 metre, increasing to 1.5 to 2 metres offshore. Swell: Southerly below 1 metre. Weather: Clear.

Forecast for Tuesday 15 September

Strong Wind Warning for Tuesday for Illawarra Coast

Winds: North to northwesterly 15 to 20 knots shifting southerly 15 to 25 knots in the early morning. Winds reaching up to 30 knots in the evening. Seas: 1 to 1.5 metres, increasing to 2 to 3 metres by early evening. 1st Swell: Southerly below 1 metre, increasing to 1 to 1.5 metres by early evening. 2nd Swell: Northeasterly below 1 metre, increasing to 1 to 1.5 metres during the morning, then decreasing to around 1 metre during the afternoon. Weather: Partly cloudy. 90% chance of showers.

Forecast for Wednesday 16 September

Winds: Southwesterly 25 to 30 knots increasing to 35 knots before turning southerly 25 to 30 knots during the morning. Seas: 2.5 to 3 metres. Swell: Southerly 1.5 to 2 metres, increasing to 2 to 3 metres during the morning. Weather: Cloudy. 70% chance of showers, with possible small hail offshore south of Port Kembla in the morning.

Forecast for Thursday 17 September

Winds: South to southwesterly 20 to 30 knots tending south to southeasterly 10 to 15 knots during the afternoon then becoming variable about 10 knots during the evening. Seas: 2 to 3 metres, decreasing to 1 metre during the afternoon or evening. Swell: Southerly 2 to 2.5 metres. Weather: Partly cloudy.

The next routine forecast will be issued at 4:00 am EST 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.