The highest day temperature in June 2025 was 95°F. The lowest night temperature was 73°F. The average values for day and night temperatures during June were 88.6°F и 81.3°F respectivly.

The average sea surface temperature in June 2025 for Hilton Head Island was 86.1°F. The maximum and minimum values were 81.0°F and 90.6°F respectively.

Most of the days in June are cloudy but you can also expect sunny or gloomy days.

Precipitation total in June for Hilton Head Island is 1.6 in. It makes june one of the most rainy months of the year.

The average wind speed in June is 7.5 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 June is 7.9 hours.