perth australia average temperature
1 There is a range of average monthly temperatures of 11.85 C (21.3 F) which is a low range. 2  There is a range/ variation of daily average temperatures of 11.9 C (21.5 F). 3  The warmest month (February) is fairly hot having a mean temperature of 24.8 degrees Celsius (76.64 degrees Fahrenheit).