San Jacinto (CA) monthly weather averages

Average daytime temperature

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

San Jacinto average temperature chart (Celsius) San Jacinto average temperature chart (Fahrenheit)
Average monthly temperatures in San Jacinto (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 16.6 18 18.4 21.1 24.6 28.9 33.4 33.1 30.1 25.8 20.4 16.9
°F 61.8 64.4 65.2 70.1 76.4 84.1 92.1 91.5 86.2 78.5 68.8 62.4

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.

San Jacinto monthly rainfall chart (mm) San Jacinto monthly rainfall chart (inches)
Average monthly rainfall in San Jacinto (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 74 60 62 34 13 3 6 8 13 13 40 47
inches 2.9 2.4 2.4 1.3 0.5 0.1 0.2 0.3 0.5 0.5 1.6 1.9
Rainy days 5 5 5 3 1 1 1 1 2 2 3 4

Average annual rainfall in San Jacinto: 289.133mm (113.8 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in San Jacinto

San Jacinto average daily sunshine chart
Average daily sunshine San Jacinto
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 8.2 8.8 9.4 10.7 10.2 10.8 12 11.5 10.2 9.3 8.4 8.1

Day / night temperatures

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

San Jacinto average minimum / maximum temperatures (Celsius) San Jacinto average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in San Jacinto (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 2.9 4.1 5.1 6.7 10.2 13.3 16.8 16.8 14.1 10.2 5.8 2.8
Max °C 16.9 18.4 18.8 21.5 25 29.3 33.8 33.5 30.5 26.2 20.8 17.3
Min °F 37.2 39.3 41.1 44.1 50.4 55.9 62.2 62.2 57.4 50.4 42.4 37
Max °F 49.8 52.2 53.4 57.4 63.7 70.3 77.5 77.2 72.1 64.8 55.9 50

Sea temperature

The graph below shows the average sea temperature.

San Jacinto average sea temperature chart (Celsius) San Jacinto average sea temperature chart (Fahrenheit)
Average sea temperature around San Jacinto in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 14.9 14.9 15.1 15.5 16.5 17.9 19.6 20.5 20.4 19.3 17.5 15.7
°F 58.8 58.7 59.2 60 61.7 64.2 67.4 68.8 68.7 66.7 63.5 60.2

Wind speed

The graph below shows the average wind speed.

San Jacinto average winspeed by month (km/h) San Jacinto average winspeed by month (mph)
Average wind speed in San Jacinto (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 12 13 15 16 15 15 15 14 13 12 12 12
mph 7 8 9 10 9 9 9 9 8 8 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.

San Jacinto relative humidity averages
Average relative humidity in San Jacinto
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
59% 59% 58% 54% 55% 56% 58% 60% 60% 59% 59% 60%