National City (CA) monthly weather averages

Contents

Average daytime temperature

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

National City average temperature chart (Celsius) National City average temperature chart (Fahrenheit)
Average monthly temperatures in National City (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 18.4 18.9 18.9 20.3 21.3 23.2 25.9 26.7 26 24.2 21.2 18.8
°F 65.1 66 66.1 68.6 70.3 73.7 78.7 80.1 78.9 75.5 70.2 65.9

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.

National City monthly rainfall chart (mm) National City monthly rainfall chart (inches)
Average monthly rainfall in National City (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 53 43 51 23 5 2 1 2 4 8 33 37
inches 2.1 1.7 2 0.9 0.2 0.1 0 0.1 0.2 0.3 1.3 1.5
Rainy days 6 5 6 4 2 1 1 1 1 2 4 5

Average annual rainfall in National City: 177.267mm (69.8 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in National City

National City average daily sunshine chart
Average daily sunshine National City
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 8.5 8.8 9.1 10 8.9 9 10.7 10.4 9.2 8.6 8.4 8.2

Day / night temperatures

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

National City average minimum / maximum temperatures (Celsius) National City average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in National City (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 7.4 8.3 9.5 11.1 13.3 15.1 17.5 18.3 17 14 10.3 7.5
Max °C 18.7 19.2 19.2 20.6 21.5 23.4 26.2 26.9 26.3 24.4 21.5 19.1
Min °F 45.2 46.9 49 51.9 55.9 59.1 63.4 64.9 62.5 57.2 50.5 45.5
Max °F 55.4 56.7 57.7 60.4 63.3 66.6 71.2 72.7 70.9 66.6 60.6 55.9

Sea temperature

The graph below shows the average sea temperature.

National City average sea temperature chart (Celsius) National City average sea temperature chart (Fahrenheit)
Average sea temperature around National City in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 15.2 15.1 15.4 15.8 16.8 18 19.7 20.5 20.5 19.4 17.7 15.9
°F 59.3 59.2 59.6 60.5 62.2 64.4 67.4 68.9 68.9 67 63.9 60.7

Wind speed

The graph below shows the average wind speed.

National City average winspeed by month (km/h) National City average winspeed by month (mph)
Average wind speed in National City (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 11 13 14 15 15 14 14 14 13 12 12 11
mph 7 8 9 9 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.

National City relative humidity averages
Average relative humidity in National City
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
64% 66% 67% 66% 70% 72% 73% 73% 72% 69% 66% 65%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

National City weather stats

National City weather statistics
Hottest month: August 26.7°C 80.1°F
Driest month: July 1mm 0ins
Sunniest month: January 8.5hrs
Coldest month: January 18.4°C 65.1°F
Wettest month: January 53mm 2.1ins
Warmest sea: September 20.5°C 68.9°F
Map showing location of National City (32.67811, -117.0992) National City map pin © Google

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