Perth monthly weather averages

Contents

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Perth

Perth average temperature chart (Celsius) Perth average temperature chart (Fahrenheit)
Average monthly temperatures in Perth (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 5.5 5.7 8.1 11 14.2 17.3 18.7 18.3 15.6 12.4 8 6.2
°F 41.8 42.3 46.6 51.8 57.6 63.2 65.6 65 60.1 54.3 46.5 43.2

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Perth monthly rainfall chart (mm) Perth monthly rainfall chart (inches)
Average monthly rainfall in Perth (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 82 57 61 43 59 59 60 72 78 77 74 75
inches 3.2 2.2 2.4 1.7 2.3 2.3 2.4 2.8 3.1 3 2.9 2.9
Rainy days 20 15 18 15 16 14 14 16 18 18 18 18

Average annual rainfall in Perth: 848.3mm (334 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Perth

Perth average daily sunshine chart
Average daily sunshine Perth
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 1.6 2.6 3.7 5.3 6.1 6.5 6.1 5.5 4.2 3 2.3 1.3

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Perth average minimum / maximum temperatures (Celsius) Perth average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Perth (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -0.2 -0.3 1.3 2.8 5.6 8.5 10.1 9.9 8 5.7 1.8 0.5
Max °C 5.6 5.9 8.3 11.2 14.5 17.6 18.9 18.6 15.8 12.6 8.2 6.4
Min °F 31.6 31.6 34.3 37 42 47.2 50.2 49.7 46.4 42.2 35.2 32.8
Max °F 36.9 37 40.6 44.6 50 55.4 58.1 57.6 53.4 48.4 41 38.1

Sea temperature

The graph below shows the average sea temperature.

Perth average sea temperature chart (Celsius) Perth average sea temperature chart (Fahrenheit)
Average sea temperature around Perth in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8.1 7.1 6.9 7.4 9 11.2 13.2 13.9 13.1 12.1 10.9 9.4
°F 46.5 44.8 44.4 45.2 48.2 52.2 55.7 57.1 55.6 53.7 51.5 49

Wind speed

The graph below shows the average wind speed.

Perth average winspeed by month (km/h) Perth average winspeed by month (mph)
Average wind speed in Perth (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 16 15 17 15 15 14 13 13 14 15 16 16
mph 10 9 11 9 9 9 8 8 9 9 10 10

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Perth relative humidity averages
Average relative humidity in Perth
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
90% 86% 81% 78% 78% 80% 80% 82% 85% 87% 88% 90%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Perth weather stats

Perth weather statistics
Hottest month: July 18.7°C 65.7°F
Driest month: April 43mm 1.7ins
Sunniest month: April 5.3hrs
Coldest month: January 5.5°C 41.9°F
Wettest month: January 82mm 3.2ins
Warmest sea: August 13.9°C 57°F
Map showing location of Perth (56.39522, -3.43139) Perth map pin © Google

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