Hilton Head Island Weather: May
 |
Average Day Temperature: | 82.8°F |
|
Average Night Temperature: | 70.2°F |
|
Sea Water Temperature: | 78.0°F |
|
Number of Sunny Days: | 12 days |
| Sunshine Hours: | 13.5 - 14.1 hours | |
|
Number of Rainy Days: | 2 days |
| Precipitation Totals: | 1.2 in | |
| detailed information | ||
forecast
| Hilton Head Island |
Temperature
| Hilton Head Island |
Air Temperature in May, °F
The highest day temperature in May 2026 was 90°F. The lowest night temperature was 54°F. The average values for day and night temperatures during May were 81.9°F и 71.1°F respectivly.
Hilton Head Island Water Sea Temperature in May, °F
The average sea surface temperature in May 2026 for Hilton Head Island was 77.6°F. The maximum and minimum values were 71.6°F and 86.6°F respectively.
You can expect various weather conditions during May. Be ready for sunny, cloudy or even gloomy days.
Precipitation Totals in May, in
Precipitation total in May for Hilton Head Island is 1.2 in.
The average wind speed in May is 7.6 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 May is 8.5 hours.
Hilton Head Island on the Weather Map
| Boston |  |
+90 |
| Chicago | |
+76 |
| Hawaii |  |
+78 |
| Honolulu | |
+78 |
| Houston |  |
+86 |
| Las Vegas | |
+92 |
| Los Angeles |  |
+70 |
| Maui | |
+70 |
| Miami | |
+82 |
| Miami Beach | |
+84 |
| New York | |
+94 |
| San Diego | |
+64 |
| San Francisco | |
+60 |
| Sarasota | |
+94 |
| Tampa | |
+92 |
| 1500 |  |
88°F | NW 12 mph |
| 1800 | |
82°F | NW 11 mph |
| 2100 |  |
78°F | N 9 mph |
| 0000 | |
76°F | N 7 mph |
| 0300 | |
74°F | N 5 mph |
| 0600 | |
72°F | SE 4 mph |
| 0900 | |
76°F | S 4 mph |
| 1200 | |
80°F | NW 7 mph |