Sydney Harbour

Middle Harbour | Nth Harbour | Port Jackson

Lane Cove River | Parramatta River

Sunday 30 April 2017

Issued at 8:30 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.



Sydney Water has advised of a sewage overflow in Mosman on 28 April 2017 which may affect Quakers Hat Bay. As a precaution, swimming should be avoided in Quakers Hat Bay, Middle Harbour due to the possibility of pollution. Contact Sydney Water on 13 20 90 for details.


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 – Sunny. 

Winds – Light becoming S/SE 15 to 20 km/h in the late afternoon then turning W/SW in the late evening.

Rainfall – 7mm in the previous 4 days

Expected maximum temperature – 23oC

Ocean temperature – 22oC

Swell – Southerly 1 to 1.5 metres, decreasing to around 1 metre during the morning, then increasing to 1 to 1.5 metres by early evening.

High tide – 1.58 metres at 10:32

Low tide – 0.44 metres at 16:21



Report pollution 131 555
Twitter @BeachwatchNSW