Sydney Harbour

Middle Harbour | Nth Harbour | Port Jackson

Lane Cove River | Parramatta River

Tuesday 26 March 2019

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.



On the 15th March 2019, Water NSW reported algal blooms at beaches along the NSW coast. The algae bloom appears as brown discolouration in the water and along the shoreline. As a precaution, direct contact with the algae should be avoided as it can cause skin and eye irritations. It is expected the algae blooms will dissipate with changes in tide and wind conditions.
Sydney Water has advised of a sewage overflow in Point Piper on 18 March 2019 which may affect Point Piper. As a precaution, swimming should be avoided at Pt Piper 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 – SW 20 to 30 km/h turning SE 15 to 20 km/h in the late afternoon.

Rainfall – 14mm in the previous 4 days.

Expected maximum temperature – 25oC

Ocean temperature – 24oC

Swell – Southerly around 1 metre.

High tide – 1.33 metres at 13:30

Low tide – 0.51 metres at 07:32



Report pollution 131 555
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