Pasadena (CA) monthly weather averages

Average daytime temperature

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

Pasadena average temperature chart (Celsius) Pasadena average temperature chart (Fahrenheit)
Average monthly temperatures in Pasadena (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 19.4 20.5 20.7 22.6 24 26.7 30.1 30.6 29.2 26.6 22.4 19.4
°F 67 69 69.2 72.6 75.2 80 86.2 87 84.5 79.8 72.3 67

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.

Pasadena monthly rainfall chart (mm) Pasadena monthly rainfall chart (inches)
Average monthly rainfall in Pasadena (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 86 82 73 30 6 2 1 3 9 10 52 54
inches 3.4 3.2 2.9 1.2 0.2 0.1 0 0.1 0.4 0.4 2.1 2.1
Rainy days 5 5 6 3 1 0 0 1 2 2 4 5

Average annual rainfall in Pasadena: 323.7mm (127.4 inches)

Average daily sunshine

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

Pasadena average daily sunshine chart
Average daily sunshine Pasadena
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 7.5 8.3 8.9 10.5 9.9 10.7 12.2 11.7 10.1 9 7.7 7.4

Day / night temperatures

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

Pasadena average minimum / maximum temperatures (Celsius) Pasadena average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Pasadena (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 7.1 8.2 8.9 10.4 12.7 14.9 17 17.5 16.3 13.5 9.7 7.1
Max °C 19.8 20.9 21 22.9 24.3 27 30.5 30.9 29.5 26.9 22.7 19.8
Min °F 44.7 46.7 47.9 50.6 54.9 58.7 62.5 63.5 61.3 56.3 49.5 44.7
Max °F 56.1 58.1 58.8 61.9 65.3 69.6 74.7 75.6 73.2 68.4 61.2 56.1

Sea temperature

The graph below shows the average sea temperature.

Pasadena average sea temperature chart (Celsius) Pasadena average sea temperature chart (Fahrenheit)
Average sea temperature around Pasadena in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 14.4 14.3 14.3 14.3 15 16.1 17.8 18.6 18.6 17.9 16.6 15.1
°F 57.9 57.7 57.7 57.8 59 61.1 64 65.5 65.5 64.3 61.9 59.1

Wind speed

The graph below shows the average wind speed.

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

Pasadena relative humidity averages
Average relative humidity in Pasadena
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
64% 66% 66% 63% 65% 66% 66% 67% 66% 65% 65% 64%