Hilton Head Island (SC) monthly weather averages

Contents

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Hilton Head Island

Hilton Head Island average temperature chart (Celsius) Hilton Head Island average temperature chart (Fahrenheit)
Average monthly temperatures in Hilton Head Island (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 14 15.6 19.5 23.7 27.5 30.4 31.8 31.1 28.7 24.6 20.3 15.8
°F 57.2 60.1 67.2 74.6 81.4 86.7 89.3 88 83.7 76.3 68.5 60.4

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.

Hilton Head Island monthly rainfall chart (mm) Hilton Head Island monthly rainfall chart (inches)
Average monthly rainfall in Hilton Head Island (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 91 82 104 70 101 144 171 193 134 71 56 75
inches 3.6 3.2 4.1 2.8 4 5.7 6.7 7.6 5.3 2.8 2.2 2.9
Rainy days 10 9 9 7 9 11 13 13 10 6 7 8

Average annual rainfall in Hilton Head Island: 1242.1mm (489 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Hilton Head Island

Hilton Head Island average daily sunshine chart
Average daily sunshine Hilton Head Island
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6.2 7 8.2 9.8 9.9 9.8 9.5 8.6 7.7 7.9 7 6.2

Day / night temperatures

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

Hilton Head Island average minimum / maximum temperatures (Celsius) Hilton Head Island average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Hilton Head Island (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 4 5.4 9 13.1 17.7 21.2 23 22.7 20.5 14.8 9.7 5.8
Max °C 14.3 15.9 19.8 24 27.7 30.6 32.1 31.3 28.9 24.9 20.6 16
Min °F 39.1 41.6 48.2 55.5 63.9 70.2 73.3 72.9 68.9 58.6 49.4 42.4
Max °F 48.4 51.1 57.9 65.3 72.9 78.6 81.5 80.6 76.5 67.6 59.2 51.6

Sea temperature

The graph below shows the average sea temperature.

Hilton Head Island average sea temperature chart (Celsius) Hilton Head Island average sea temperature chart (Fahrenheit)
Average sea temperature around Hilton Head Island 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.

Hilton Head Island average winspeed by month (km/h) Hilton Head Island average winspeed by month (mph)
Average wind speed in Hilton Head Island (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 14 16 16 15 13 13 12 11 12 13 13 13
mph 9 10 10 9 8 8 8 7 7 8 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.

Hilton Head Island relative humidity averages
Average relative humidity in Hilton Head Island
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
70% 67% 68% 66% 71% 74% 76% 79% 78% 74% 73% 72%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Hilton Head Island weather stats

Hilton Head Island weather statistics
Hottest month: July 31.8°C 89.2°F
Driest month: November 56mm 2.2ins
Sunniest month: April 9.8hrs
Coldest month: January 14°C 57.2°F
Wettest month: August 193mm 7.6ins
Warmest sea: August 28.3°C 82.9°F
Map showing location of Hilton Head Island (32.21632, -80.75261) Hilton Head Island map pin © Google

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