The highest day temperature in March 2025 was 85°F. The lowest night temperature was 44°F. The average values for day and night temperatures during March were 69.9°F и 56.4°F respectivly.

The average sea surface temperature in March 2025 for Hilton Head Island was 60.0°F. The maximum and minimum values were 55.8°F and 65.2°F respectively.

Most of the days in March are sunny but you can also expect cloudy and gloomy days.

Precipitation total in March for Hilton Head Island is 1.4 in. It makes march one of the most rainy months of the year.

The average wind speed in March is 7.8 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Hilton Head Island in March is 7.0 hours.