Water temperature in Hilton Head Island (SC) in December

Is it warm enough to swim in Hilton Head Island in December? Average water temperature in Hilton Head Island in December is 61.2°F and therefore is not suitable for comfortable swimming. The warmest sea in Hilton Head Island in December is 67.3°F, and the coldest is 49.8°F. Average high air temperature in Hilton Head Island in December is 63°F, and average low temperature is 41°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Hilton Head Island

Changes water temperature in Hilton Head Island in December 2025, 2024

To get an accurate forecast for the water temperature in Hilton Head Island for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Hilton Head Island, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of December.

Average water temperature in Hilton Head Island in December over a decade

Chart comparing the height of waves in Hilton Head Island in December over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

This data display average monthly climate indicators in Hilton Head Island in December based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip

You can also view information about water temperature for other months by clicking on the month button below

The nearest locations with the average water temperature in December. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

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Our report for Hilton Head Island is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.