Environmental issues


Sydney Harbour

Middle Harbour | Nth Harbour | Port Jackson

Lane Cove River | Parramatta River

Saturday 18 April 2015

Issued at 9:20 AM

Rainfall data has been used to predict the likelihood of bacterial contamination at swimming sites in Sydney Harbour.

Hover over maps for council updates, the latest weekly star ratings and annual Beach Suitability Grades.


Pollution is unlikely Pollution is unlikely, enjoy your swim!
Pollution is possible Pollution is possible, take care.
Pollution is likely Pollution is likely, avoid swimming today.
Update Updated information available.

More information about this forecast


As a general precaution, swimming in Sydney Harbour should be avoided for up to three days following rainfall or for as long as stormwater is present.

* Please note water temperature in estuarine areas can be warmer in summer and cooler in winter than the reported ocean temperature.

Beach Conditions

Weather – Partly cloudy. Patchy fog early this morning. High (70%) chance of rain late this afternoon and evening. The chance of a thunderstorm late this afternoon and evening. 

Winds – N 20 to 30 km/h tending NW 15 to 20 km/h in the evening.

Rainfall – 9mm in the previous 4 days

Expected maximum temperature – 27oC

Ocean temperature – 21oC

Swell – Below 0.5 metres, tending east to northeasterly 1 to 1.5 metres during the morning, then tending northeasterly around 1 metre during the afternoon.

High tide – 1.77 metres at 07:40

Low tide – 0.25 metres at 13:49



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