Average monthly water temperature in Perth, Australia
On this page you find the mean water temperature over the year in Perth (Western Australia), Australia. Take a closer look at the water temperature patterns and what they mean for swimming and recreation.
Perth experiences water temperature shifts throughout the year. The warmest month, March, reaches an average of 21°C (70°F).
The coldest month, August, averages 17°C (63°F). Visitors during these months can leave their swimming gear at home.
Perth Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Perth - and find the best time to visit.
Perth 3-Day Forecast
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Perth climate overview or explore weather in Australia.
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