North Charleston (SC) monthly weather averages

Average daytime temperature

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

North Charleston average temperature chart (Celsius) North Charleston average temperature chart (Fahrenheit)
Average monthly temperatures in North Charleston (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 13.9 15.7 19.9 24 27.7 30.5 32.1 31.4 29.1 24.7 20.4 15.9
°F 57 60.2 67.8 75.2 81.9 87 89.8 88.6 84.3 76.4 68.8 60.6

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.

North Charleston monthly rainfall chart (mm) North Charleston monthly rainfall chart (inches)
Average monthly rainfall in North Charleston (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 95 86 109 72 101 150 160 177 123 76 62 79
inches 3.7 3.4 4.3 2.8 4 5.9 6.3 7 4.8 3 2.4 3.1
Rainy days 10 9 9 7 9 11 12 13 9 6 7 8

Average annual rainfall in North Charleston: 1240.234mm (488.3 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in North Charleston

North Charleston average daily sunshine chart
Average daily sunshine North Charleston
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6.3 7.1 8.4 9.7 10.1 9.9 9.8 8.8 7.9 7.8 6.9 6.1

Day / night temperatures

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

North Charleston average minimum / maximum temperatures (Celsius) North Charleston average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in North Charleston (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 2.5 3.7 7.8 11.5 16.4 20.2 22.3 22 19.3 12.9 7.9 4
Max °C 14.2 16 20.2 24.3 28 30.8 32.4 31.7 29.3 25 20.8 16.2
Min °F 36.4 38.6 46 52.7 61.5 68.4 72.1 71.5 66.7 55.1 46.1 39.2
Max °F 46.9 49.6 57.2 64.2 72 77.9 81.1 80.2 75.7 66 57.7 50.2

Sea temperature

The graph below shows the average sea temperature.

North Charleston average sea temperature chart (Celsius) North Charleston average sea temperature chart (Fahrenheit)
Average sea temperature around North Charleston in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 19.9 19.3 18.8 19.7 22.8 26.1 27.9 28.3 27.4 24.8 22.2 20.9
°F 67.9 66.7 65.8 67.4 73 79 82.3 82.9 81.3 76.6 71.9 69.7

Wind speed

The graph below shows the average wind speed.

North Charleston average winspeed by month (km/h) North Charleston average winspeed by month (mph)
Average wind speed in North Charleston (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 15 17 17 16 14 14 13 12 13 13 14 14
mph 9 10 10 10 9 9 8 8 8 8 9 9

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.

North Charleston relative humidity averages
Average relative humidity in North Charleston
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
70% 67% 68% 67% 73% 75% 77% 79% 78% 74% 73% 72%