Southern Harbours

Botany Bay

Lower Georges River

Port Hacking

Friday 23 April 2021

Issued at 7:15 AM

Rainfall data has been used to predict the likelihood of bacterial contamination at swimming sites in Botany Bay, lower Georges River and Port Hacking.

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



For information on beach closures please contact relevant authorities such as local councils.
Sydney Water has advised of a sewage overflow in Hurstville Grove on 22 April 2021 which may affect Renown Bay. As a precaution, swimming should be avoided at Renown Bay 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 Botany Bay, lower Georges River and Port Hacking should be avoided for up to three days following rainfall or for as long as stormwater is present. The most obvious signs of stormwater pollution are water discolouration as well as debris in the water and on the tide line.

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


Beach Conditions

Weather – Mostly sunny. Areas of smoke haze. 

Winds – W 15 to 20 km/h tending SW in the middle of the day then becoming light in the early afternoon.

Rainfall – 1mm in the previous 5 days.

Expected maximum temperature – 22oC

Ocean temperature – 21oC

Swell – Southerly around 1 metre, increasing to 1.5 to 2 metres later in the evening.

High tide – 1.47 metres at 17:38

Low tide – 0.46 metres at 11:25



Report pollution 131 555
Twitter @BeachwatchNSW