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 4:05 pm EDT on Thursday 21 October 2021
for the period until midnight EDT Sunday 24 October 2021.

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

An area of low pressure and associated trough are affecting the coastal waters until Friday when a ridge builds. This ridge declines east on Saturday as a cold front and trough move across from the west. An area of low pressure develops on this trough, east of Tasmania, later Saturday into Sunday and slowly drifts east.

Hunter Coast: Seal Rocks to Broken Bay

Forecast for Thursday 21 October until midnight

Winds: Easterly 10 to 15 knots, reaching up to 20 knots inshore in the evening. Seas: Around 1 metre. 1st Swell: Southerly 1 to 1.5 metres. 2nd Swell: Easterly around 1 metre inshore, increasing to 1 to 1.5 metres offshore. Weather: Partly cloudy. The chance of a thunderstorm.

Forecast for Friday 22 October

Winds: East to southeasterly 10 to 15 knots turning northeasterly in the evening. Seas: Below 1 metre. 1st Swell: Southeasterly 1.5 metres inshore, increasing to 1.5 to 2 metres offshore south of Norah Head. 2nd Swell: Southerly around 1 metre. Weather: Partly cloudy. The chance of a thunderstorm.

Forecast for Saturday 23 October

Winds: North to northeasterly about 10 knots increasing to 10 to 15 knots in the morning then becoming northeasterly 15 to 25 knots in the early afternoon. Seas: Below 1 metre, increasing to 1 to 1.5 metres during the afternoon. Swell: Southeasterly 1 to 1.5 metres, decreasing to around 1 metre during the morning. Weather: Mostly sunny day. The chance of a thunderstorm in the late afternoon and evening.

Forecast for Sunday 24 October

Winds: North to northeasterly 15 to 20 knots shifting south to southwesterly 20 to 30 knots during the morning. Seas: 1 to 1.5 metres, increasing to 2 to 2.5 metres during the morning. Swell: Southeasterly around 1 metre, tending easterly 1.5 to 2 metres during the morning. Weather: Cloudy. 70% chance of showers. The chance of a thunderstorm in the morning and afternoon.

Sydney Coast: Broken Bay to Port Hacking

Forecast for Thursday 21 October until midnight

Winds: Easterly 15 to 20 knots decreasing to below 10 knots in the late evening. Seas: Around 1 metre. 1st Swell: Southerly 1 to 1.5 metres, decreasing to around 1 metre by early evening. 2nd Swell: Easterly around 1 metre, increasing to 1 to 1.5 metres by early evening. Weather: Partly cloudy. The chance of a thunderstorm.

Forecast for Friday 22 October

Winds: South to southeasterly below 10 knots tending easterly 10 to 15 knots in the early afternoon then tending northeasterly in the evening. Seas: Below 1 metre. 1st Swell: Easterly 1.5 metres, tending southeasterly 1.5 to 2 metres during the morning, then decreasing to 1.5 metres around midday. 2nd Swell: Southerly around 1 metre. Weather: Partly cloudy.

Forecast for Saturday 23 October

Winds: North to northeasterly about 10 knots increasing to 15 to 25 knots in the morning. Seas: Below 1 metre, increasing to 1 to 1.5 metres during the afternoon. Swell: Southeasterly 1 to 1.5 metres, decreasing to around 1 metre during the morning. Weather: Partly cloudy. The chance of a thunderstorm in the late afternoon and evening.

Forecast for Sunday 24 October

Winds: Northwest to northeasterly 10 to 15 knots tending southerly 20 to 30 knots during the morning. Seas: 1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the morning. 1st Swell: Southeasterly around 1 metre, tending easterly 1 to 1.5 metres during the morning. 2nd Swell: South to southeasterly around 1 metre. Weather: Cloudy. 70% chance of showers.

Illawarra Coast: Port Hacking to Ulladulla

Forecast for Thursday 21 October until midnight

Winds: Easterly 10 to 15 knots, reaching up to 20 knots offshore north of Port Kembla in the evening. Winds decreasing to about 10 knots in the late evening. Seas: Around 1 metre. 1st Swell: Southeasterly 1.5 metres, decreasing to around 1 metre by early evening. 2nd Swell: Easterly around 1 metre inshore, increasing to 1 to 1.5 metres offshore by early evening. Weather: Partly cloudy.

Forecast for Friday 22 October

Winds: Variable about 10 knots becoming east to northeasterly 10 to 15 knots in the early afternoon then tending north to northeasterly in the evening. Seas: Below 1 metre. 1st Swell: Easterly 1.5 to 2 metres, tending southeasterly 1.5 to 2 metres during the morning, then decreasing to 1.5 metres by early evening. 2nd Swell: Southerly around 1 metre. Weather: Partly cloudy.

Forecast for Saturday 23 October

Winds: North to northeasterly 15 to 20 knots. Seas: Below 1 metre, increasing to 1 to 1.5 metres during the morning. Swell: Southeasterly 1.5 metres, decreasing to around 1 metre during the morning. Weather: Mostly sunny day. 60% chance of showers in the late afternoon and evening. The chance of a thunderstorm in the late afternoon and evening.

Forecast for Sunday 24 October

Winds: Northwest to southwesterly 10 to 15 knots tending southerly 20 to 30 knots during the morning. Seas: Around 1 metre, increasing to 1.5 to 2.5 metres during the morning. 1st Swell: Below 0.5 metres, tending southerly 1 to 2 metres during the afternoon. 2nd Swell: Easterly around 1 metre, increasing to 1 to 1.5 metres during the morning. Weather: Partly cloudy. 70% chance of showers.

The next routine forecast will be issued at 4:10 am EDT Friday.

* 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.