Average water temperature in Sydney (New South Wales) in celsius
- On average, January has the hottest water temperature.
- On average, August has the coldest water temperature.
Show the average water temperatures in Sydney in Fahrenheit »
More climate information for Sydney
Weather and Climate offers all the information you need to know about the climate in Sydney.
We collected past weather data from many thousand weather stations around the world. So find on this website the historical weather averages in other cities in Australia and climate and forecast data for all other countries in the world.