Rancho Santa Margarita (CA) monthly weather averages

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Rancho Santa Margarita

Rancho Santa Margarita average temperature chart (Celsius) Rancho Santa Margarita average temperature chart (Fahrenheit)
Average monthly temperatures in Rancho Santa Margarita (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 17.8 18.5 18.2 20.2 21.8 24.1 27.6 28.1 26.9 24.3 20.6 17.9
°F 64.1 65.2 64.8 68.3 71.2 75.4 81.6 82.6 80.3 75.7 69.1 64.3

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.

Rancho Santa Margarita monthly rainfall chart (mm) Rancho Santa Margarita monthly rainfall chart (inches)
Average monthly rainfall in Rancho Santa Margarita (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 72 64 63 31 7 2 2 3 6 7 41 49
inches 2.8 2.5 2.5 1.2 0.3 0.1 0.1 0.1 0.2 0.3 1.6 1.9
Rainy days 5 5 6 4 1 1 0 1 2 2 4 5

Average annual rainfall in Rancho Santa Margarita: 261.6mm (103 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Rancho Santa Margarita

Rancho Santa Margarita average daily sunshine chart
Average daily sunshine Rancho Santa Margarita
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 8 8.6 9.1 10.4 9.6 10.1 11.8 11.4 9.8 8.9 8.1 7.9

Day / night temperatures

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

Rancho Santa Margarita average minimum / maximum temperatures (Celsius) Rancho Santa Margarita average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Rancho Santa Margarita (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 5.5 6.3 6.9 8.4 11 13.2 15.6 16.2 14.7 11.8 8.1 5.4
Max °C 18.2 18.8 18.5 20.5 22.1 24.4 27.9 28.4 27.2 24.6 20.9 18.3
Min °F 41.8 43.3 44.4 47 51.7 55.8 60 61.2 58.4 53.2 46.6 41.6
Max °F 53.2 54.5 54.9 57.9 61.7 65.8 71.1 72.1 69.6 64.8 58.1 53.2

Sea temperature

The graph below shows the average sea temperature.

Rancho Santa Margarita average sea temperature chart (Celsius) Rancho Santa Margarita average sea temperature chart (Fahrenheit)
Average sea temperature around Rancho Santa Margarita in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 14.9 14.9 15.1 15.6 16.6 18 19.8 20.5 20.4 19.3 17.5 15.7
°F 58.8 58.8 59.3 60 61.8 64.4 67.6 69 68.8 66.7 63.5 60.2

Wind speed

The graph below shows the average wind speed.

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

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.

Rancho Santa Margarita relative humidity averages
Average relative humidity in Rancho Santa Margarita
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
63% 65% 65% 63% 65% 67% 67% 68% 68% 66% 65% 64%