Mount Isa monthly weather averages

Contents

Average daytime temperature

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

Mount Isa average temperature chart (Celsius) Mount Isa average temperature chart (Fahrenheit)
Average monthly temperatures in Mount Isa (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 35.9 34.9 33.5 30.8 26.8 23.7 23.4 26 29.6 33.5 35.7 36.7
°F 96.7 94.7 92.2 87.5 80.2 74.6 74.2 78.8 85.3 92.3 96.3 98

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.

Mount Isa monthly rainfall chart (mm) Mount Isa monthly rainfall chart (inches)
Average monthly rainfall in Mount Isa (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 97 91 58 17 18 10 12 7 13 21 33 60
inches 3.8 3.6 2.3 0.7 0.7 0.4 0.5 0.3 0.5 0.8 1.3 2.4
Rainy days 10 9 7 3 2 2 2 2 2 4 4 7

Average annual rainfall in Mount Isa: 555.267mm (218.6 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Mount Isa

Mount Isa average daily sunshine chart
Average daily sunshine Mount Isa
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 9.5 9.2 9.2 10 9.9 10 10.3 10.8 10.6 10.5 10.4 10.1

Day / night temperatures

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

Mount Isa average minimum / maximum temperatures (Celsius) Mount Isa average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Mount Isa (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 23.4 22.9 21.3 17.9 13.5 9.4 8 9.8 13.6 17.9 20.9 22.4
Max °C 36.3 35.2 33.8 31.2 27.1 24 23.8 26.4 30 33.9 36.1 37
Min °F 74 73.1 70.3 64.1 56.3 48.9 46.4 49.6 56.5 64.2 69.6 72.3
Max °F 85.6 84.2 81.5 76.1 68.5 62.1 60.6 64.6 71.2 78.6 83.3 85.5

Sea temperature

The graph below shows the average sea temperature.

Mount Isa average sea temperature chart (Celsius) Mount Isa average sea temperature chart (Fahrenheit)
Average sea temperature around Mount Isa in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 28.8 28.9 28.5 27.5 25.1 22.4 20.8 21 22.9 25.3 27.2 28.3
°F 83.8 83.9 83.4 81.4 77.2 72.4 69.4 69.8 73.2 77.6 80.9 82.9

Wind speed

The graph below shows the average wind speed.

Mount Isa average winspeed by month (km/h) Mount Isa average winspeed by month (mph)
Average wind speed in Mount Isa (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 13 12 13 13 13 12 12 13 14 14 13 12
mph 8 7 8 8 8 7 7 8 9 9 8 8

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.

Mount Isa relative humidity averages
Average relative humidity in Mount Isa
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
41% 45% 40% 35% 40% 40% 37% 30% 25% 24% 26% 31%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Mount Isa weather stats

Mount Isa weather statistics
Hottest month: January 35.9°C 96.6°F
Driest month: August 7mm 0.3ins
Sunniest month: August 10.8hrs
Coldest month: July 23.4°C 74.1°F
Wettest month: January 97mm 3.8ins
Warmest sea: February 28.9°C 84°F
Map showing location of Mount Isa (-20.72523, 139.49727) Mount Isa map pin © Google

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