Hilton Head Island Weather: May
 |
Average Day Temperature: | 83.0°F |
|
Average Night Temperature: | 70.0°F |
|
Sea Water Temperature: | 78.0°F |
|
Number of Sunny Days: | 11 days |
| Sunshine Hours: | 13.5 - 14.1 hours | |
|
Number of Rainy Days: | 2 days |
| Precipitation Totals: | 1.3 in | |
| detailed information | ||
forecast
| Hilton Head Island |
Temperature
| Hilton Head Island |
Air Temperature in May, °F
The highest day temperature in May 2025 was 100°F. The lowest night temperature was 69°F. The average values for day and night temperatures during May were 88.0°F и 75.0°F respectivly.
Hilton Head Island Water Sea Temperature in May, °F
The average sea surface temperature in May 2025 for Hilton Head Island was 79.6°F. The maximum and minimum values were 76.2°F and 83.2°F respectively.
Most of the days in May are cloudy but you can also expect sunny or gloomy days.
Precipitation Totals in May, in
Precipitation total in May for Hilton Head Island is 1.3 in.
The average wind speed in May is 7.2 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 8.1 hours.
Hilton Head Island on the Weather Map
| Chicago |  |
-2 |
| Hawaii | |
+78 |
| Honolulu | |
+78 |
| Houston | |
+44 |
| Las Vegas |  |
+40 |
| Los Angeles | |
+52 |
| Maui | |
+72 |
| Miami | |
+72 |
| Miami Beach |  |
+80 |
| New York | |
+18 |
| San Diego | |
+54 |
| San Francisco | |
+46 |
| Sarasota | |
+62 |
| Tampa | |
+62 |
| Washington | |
+28 |
| 0600 |  |
52°F | S 4 mph |
| 0900 | |
56°F | SW 7 mph |
| 1200 | |
54°F | SW 6 mph |
| 1500 | |
52°F | SE 8 mph |
| 1800 | |
52°F | SE 8 mph |
| 2100 |  |
52°F | SW 4 mph |
| 0000 | |
50°F | SE 6 mph |
| 0300 | |
48°F | S 2 mph |