Weather in Hilton Head Island: April
 |
Average day temperature: | 73.4°F |
| Average night temperature: | 61.5°F | |
 |
Sea water temperature: | 68.3°F |
 |
Number of sunny days: | 15 days |
| Day length: | 12.5 - 13.4 hours | |
 |
Number of rainy days: | 2 days |
| Precipitation totals: | 1.1 in. | |
| more information | ||
forecast
| Hilton Head Island |
temperature
| Hilton Head Island |
Air temperature in April, °F
The highest day temperature during April of 2026 was 86°F. At the same time the lowest night temperature was 54°F. Daily and nightly averages during April were 74.7°F and 61.4°F.
Sea water temperature in Hilton Head Island in April, °F
The average sea water temperature in April of 2026 was 68.5°F. The highest and lowest sea temperatures during the month were 71.8°F and 63.5°F.
Mostly all days in April are sunny but cloudy days are also possible.
Precipitation total in April, in.
Precipitation total value in Hilton Head Island in April is 1.1 in. Other months of the year show relatively similar values.
The average wind speed value in April is 8.2 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 April is: 8.8.
Best time for vacation in Hilton Head Island
Hilton Head Island on a weather map
19 mph
19 mph
16 mph
15 mph
14 mph
12 mph
17 mph
19 mph
