Phoenix (AZ) monthly weather averages

Average daytime temperature

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

Phoenix average temperature chart (Celsius) Phoenix average temperature chart (Fahrenheit)
Average monthly temperatures in Phoenix (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 18.7 21.3 23.9 28.9 33.9 39.4 40.9 39.6 36.5 30.9 23.6 18.8
°F 65.7 70.4 75.1 84 93 102.9 105.6 103.3 97.8 87.6 74.5 65.8

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.

Phoenix monthly rainfall chart (mm) Phoenix monthly rainfall chart (inches)
Average monthly rainfall in Phoenix (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 21 18 22 6 3 2 20 29 21 16 17 22
inches 0.8 0.7 0.9 0.2 0.1 0.1 0.8 1.2 0.8 0.6 0.7 0.9
Rainy days 4 4 4 2 1 1 4 5 3 3 3 4

Average daily sunshine

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

Phoenix average daily sunshine chart
Average daily sunshine Phoenix
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 9 9.8 11 12.6 13.7 14.5 12.9 12.4 11.7 10.7 9.3 8.7

Day / night temperatures

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

Phoenix average minimum / maximum temperatures (Celsius) Phoenix average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Phoenix (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 4.4 6.3 8.5 11.9 16.5 21.4 26.2 25.3 21.5 14.9 8.4 4.5
Max °C 19.1 21.7 24.3 29.3 34.3 39.8 41.3 40 36.9 31.3 24 19.2
Min °F 39.8 43.3 47.3 53.4 61.7 70.5 79.1 77.5 70.7 58.8 47.1 40
Max °F 53.1 57.2 61.5 69.1 77.7 87.1 92.7 90.7 84.6 73.6 61.2 53.2

Sea temperature

The graph below shows the average sea temperature.

Phoenix average sea temperature chart (Celsius) Phoenix average sea temperature chart (Fahrenheit)
Average sea temperature around Phoenix in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 14.9 14.7 15.1 15.9 17.3 19.1 21.1 22.2 21.9 20.3 18.1 16
°F 58.8 58.5 59.2 60.7 63.2 66.5 70 71.9 71.4 68.5 64.5 60.7

Wind speed

The graph below shows the average wind speed.

Phoenix average winspeed by month (km/h) Phoenix average winspeed by month (mph)
Average wind speed in Phoenix (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 10 12 13 14 14 13 14 13 12 11 10 10
mph 7 7 8 9 9 8 9 8 8 7 7 6

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.

Phoenix relative humidity averages
Average relative humidity in Phoenix
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
51% 44% 39% 28% 23% 20% 33% 37% 37% 37% 44% 52%

Other monthly averages

UV index Best time to go?

Phoenix weather stats

Phoenix weather statistics
Hottest month: July 40.9°C 105.6°F
Driest month: June 2mm 0.1ins
Sunniest month: June 14.5hrs
Coldest month: January 18.7°C 65.7°F
Wettest month: August 29mm 1.1ins
Warmest sea: August 22.2°C 72°F
Map showing location of Phoenix (33.44838, -112.07404)

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