Australian Government

Bureau of Meteorology


Coastal Waters Forecast 

Marine (lite) Home

IDN11013

Australian Government Bureau of Meteorology
New South Wales

Local Waters Forecast for Sydney Enclosed Waters

Issued at 10:00 am EST on Wednesday 20 May 2026
for the period until midnight EST Saturday 23 May 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

A high pressure ridge establishing in the area on Wednesday with a trough and low pressure system further offshore and remaining over the Tasman Sea for the next several days, whipping fresh to strong southerly winds and large powerful waves to the coastline mid to late this week.

Forecast for Wednesday 20 May until midnight

Winds: South to southwesterly 15 to 20 knots. Seas: Below 0.5 metres. Weather: Mostly sunny.

Forecast for Thursday 21 May

Strong Wind Warning for Thursday for Sydney Enclosed Waters

Winds: South to southwesterly 15 to 25 knots becoming southerly 20 to 30 knots in the early afternoon then decreasing to 15 to 25 knots in the late afternoon. Seas: Below 0.5 metres. Weather: Partly cloudy. 80% chance of showers.

Forecast for Friday 22 May

Winds: Southerly 15 to 20 knots. Seas: Below 0.5 metres. Weather: Partly cloudy. 80% chance of showers.

Forecast for Saturday 23 May

Winds: Southerly 15 to 20 knots turning southeasterly below 10 knots during the day. Seas: Below 0.5 metres. Weather: Cloudy. 90% chance of showers.

The next routine forecast will be issued at 4:05 pm EST Wednesday.

* Calls to 1300 number cost around 27.5c inc. GST, higher from mobiles or public phones. Marine forecasts are also available on VHF and HF radio. View the radio schedule on www.bom.gov.au/marine

Check the latest Coastal Waters Forecast or Local Waters Forecast at http://www.bom.gov.au/nsw/forecasts/map.shtml for information on wind, wave and weather conditions for these coastal zones.