Hilton Head Island Temperatures: Averages by Month





The numbers here tell you how hot and cold the weather usually is at Hilton Head Island, South Carolina during each month of the year.

The average high and low temperatures are listed below monthly and annually for Hilton Head, in both degrees Fahrenheit and Celsius.

Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.

To find out how often it rises over 70, 80 or 90 °F each month on the Island, scroll down farther. There are also monthly and yearly counts of days with cold weather.

All the numbers are long-term historical averages based on climate data gathered from 1981 to 2010.

Average Hilton Head Island temperatures
High °F Low °F   High °C Low °C
60 40 January 16 4
63 42 February 17 6
69 49 March 21 9
75 55 April 24 13
82 63 May 28 17
86 71 June 30 22
89 74 July 32 23
88 73 August 31 23
84 69 September 29 21
77 59 October 25 15
70 50 November 21 10
62 43 December 16 6
76 57 Year 24 14

Days of Hot Weather in Hilton Head Island

Hilton Head can get 90-degree weather between May and September. But the thermometer rarely tops 100 °F (38 °C). That kind of heat descends on the island an average of just once every two years. July is when a day is most likely to get that hot.

Days per month in Hilton Head Island of at least 70, 80 or 90 °F
  70 °F
21 °C
80 °F
27 °C
90 °F
32 °C
January 3 0 0
February 6 0 0
March 6 2 0
April 24 6 0
May 31 21 1
June 30 28 6
July 31 31 12
August 31 30 9
September 30 24 3
October 26 9 0
November 16 2 0
December 6 0 0
Year 248 152 32

How Often Hilton Head Island Has Cold Temperatures

Freezing temperatures can occur at Hilton Head from November to March. On the coldest nights, it can drop to 20 °F (-8 °C) or lower. Weather that chilly happens about once a year, on average, usually in December, January or February.

Days per month on average in Hilton Head Island when the minimum temperature drops to 32, 40, or 50 °F or below
  32 °F
0 °C
40 °F
4 °C
50 °F
10 °C
January 7 16 27
February 4 11 22
March 1 6 16
April 0 1 9
May 0 0 1
June 0 0 0
July 0 0 0
August 0 0 0
September 0 0 0
October 0 0 5
November 1 5 15
December 4 13 24
Year 17 52 118
Reference

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

Hilton Head Island Weather
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