Sunnyvale (CA) monthly weather averages

Contents

Average daytime temperature

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

Sunnyvale average temperature chart (Celsius) Sunnyvale average temperature chart (Fahrenheit)
Average monthly temperatures in Sunnyvale (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 13.9 16.1 17.2 19.2 21.5 24.1 25.5 25.6 25.5 22.7 17.7 13.9
°F 57 60.9 63 66.6 70.7 75.5 78 78.2 77.9 72.9 63.9 57

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.

Sunnyvale monthly rainfall chart (mm) Sunnyvale monthly rainfall chart (inches)
Average monthly rainfall in Sunnyvale (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 87 66 65 30 7 2 1 1 4 22 56 64
inches 3.4 2.6 2.5 1.2 0.3 0.1 0 0 0.2 0.9 2.2 2.5
Rainy days 9 9 10 6 2 1 1 1 1 4 8 9

Average annual rainfall in Sunnyvale: 320.534mm (126.2 inches)

Average daily sunshine

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

Sunnyvale average daily sunshine chart
Average daily sunshine Sunnyvale
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6.2 7.9 9.4 11.2 11.7 11.8 11.7 10.8 10.3 9 6.5 5.6

Day / night temperatures

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

Sunnyvale average minimum / maximum temperatures (Celsius) Sunnyvale average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Sunnyvale (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 4.5 6.3 7.2 7.9 9.8 11.8 12.8 13.1 12.6 10.2 7.3 4.7
Max °C 14.1 16.3 17.5 19.5 21.8 24.5 25.9 26 25.8 23.1 18 14.1
Min °F 40.1 43.3 44.9 46.2 49.6 53.2 55 55.5 54.7 50.3 45.1 40.5
Max °F 48.7 52.3 54.1 56.7 60.4 64.6 66.7 67.1 66.6 61.9 54.7 48.9

Sea temperature

The graph below shows the average sea temperature.

Sunnyvale average sea temperature chart (Celsius) Sunnyvale average sea temperature chart (Fahrenheit)
Average sea temperature around Sunnyvale in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 12.4 12.2 12.2 11.8 11.8 12.2 13.1 14 14.4 14.2 13.6 12.7
°F 54.2 54 53.9 53.3 53.2 53.9 55.5 57.2 57.9 57.6 56.4 54.9

Wind speed

The graph below shows the average wind speed.

Sunnyvale average winspeed by month (km/h) Sunnyvale average winspeed by month (mph)
Average wind speed in Sunnyvale (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 12 14 17 18 20 20 19 18 16 14 13 12
mph 8 9 10 11 12 12 12 11 10 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.

Sunnyvale relative humidity averages
Average relative humidity in Sunnyvale
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
79% 77% 73% 69% 68% 67% 67% 69% 68% 70% 76% 80%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Sunnyvale weather stats

Sunnyvale weather statistics
Hottest month: August 25.6°C 78.1°F
Driest month: July 1mm 0ins
Sunniest month: April 11.2hrs
Coldest month: January 13.9°C 57°F
Wettest month: January 87mm 3.4ins
Warmest sea: September 14.4°C 57.9°F
Map showing location of Sunnyvale (37.36883, -122.03635) Sunnyvale map pin © Google

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