Weather in Hilton Head Island: July
 |
Average day temperature: | 88.0°F |
| Average night temperature: | 77.8°F | |
 |
Sea water temperature: | 85.3°F |
 |
Number of sunny days: | 12 days |
| Day length: | 13.7 - 14.2 hours | |
 |
Number of rainy days: | 4 days |
| Precipitation totals: | 1.8 in. | |
| more information | ||
forecast
| Hilton Head Island |
temperature
| Hilton Head Island |
Air temperature in July, °F
The highest day temperature during July of 2026 was 98°F. At the same time the lowest night temperature was 75°F. Daily and nightly averages during July were 92.1°F and 79.2°F.
Sea water temperature in Hilton Head Island in July, °F
The average sea water temperature in July of 2026 was 86.3°F. The highest and lowest sea temperatures during the month were 87.3°F and 84.9°F.
Number of sunny, partly cloudy and cloudy days in July is almost equal.
Precipitation total in July, in.
Precipitation total value in Hilton Head Island in July is 1.8 in. Other months of the year show relatively similar values.
The average wind speed value in July is 7.4 mph The wind's strength is relatively same during the whole year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in July is: 8.4.
Best time for vacation in Hilton Head Island
Hilton Head Island on a weather map
5 mph
7 mph
10 mph
10 mph
8 mph
5 mph
2 mph
2 mph
