Average monthly water temperature in Sydney, Australia
On this page you find the mean water temperature over the year in Sydney (New South Wales), Australia. Get insights into the water temperature fluctuations and discover what they mean for visitors.
In Sydney, the water undergoes seasonal changes. The warmest month is January, with an average water temperature of 21°C (70°F).
The coldest water temperature month, August, has an average temperature of 16°C (61°F). It may not be the ideal time for a swim.
