Current sea water temperature:
+57.4°F
| Minimum sea water temperature in December: | 65.8°F |
| Maximum sea water temperature in December: | 46.0°F |
| Average sea water temperature in December: | 57.5°F |
| more information | |
14 days
forecast
forecast
| Hilton Head Island |
monthly
weather
weather
| Hilton Head Island |
Sea water temperature for the last 10 days:
| December 29 | 57.4°F | December 24 | 52.3°F |
| December 28 | 56.7°F | December 23 | 54.0°F |
| December 27 | 56.3°F | December 22 | 52.3°F |
| December 26 | 55.9°F | December 21 | 53.6°F |
| December 25 | 54.3°F | December 20 | 53.4°F |
Monthly sea water temperature, °F
When is the warmest sea in Hilton Head Island?
Based on the data about daily sea water temperature for the last three years the warmest sea in Hilton Head Island was noticed in August, July and September.
Monthly Sea Temperatures in Hilton Head Island, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 85.0°F. The highest and lowest sea temperatures during the month were 88.9°F and 81.9°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 85.7°F. The highest and lowest sea temperatures during the month were 88.3°F and 83.8°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 79.8°F. The highest and lowest sea temperatures during the month were 81.5°F and 77.2°F.
current
weather
weather
| Hilton Head Island |
weather in
January
January
| Hilton Head Island |
Best time for vacation in Hilton Head Island
Hilton Head Island on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Hilton Head Island
Local time: 23:37
December 30, tuesday
0000
45°F
SE
14 mph
14 mph
0300
41°F
SE
11 mph
11 mph
0600
37°F
SE
11 mph
11 mph
0900
36°F
SE
11 mph
11 mph
1200
43°F
SE
9 mph
9 mph
1500
48°F
SE
9 mph
9 mph
1800
50°F
SE
9 mph
9 mph
2100
45°F
E
6 mph
6 mph
