Current sea water temperature:
+52.3°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: | 57.6°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 22 | 52.3°F | December 17 | 52.7°F |
| December 21 | 53.6°F | December 16 | 53.4°F |
| December 20 | 53.4°F | December 15 | 54.9°F |
| December 19 | 53.2°F | December 14 | 54.7°F |
| December 18 | 52.3°F | December 13 | 54.3°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
December
December
| 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: 05:20
December 22, monday
0600
48°F
SW
15 mph
15 mph
0900
48°F
SW
14 mph
14 mph
1200
55°F
SW
16 mph
16 mph
1500
59°F
SW
17 mph
17 mph
1800
61°F
SW
14 mph
14 mph
2100
57°F
SW
11 mph
11 mph
December 23, tuesday
0000
55°F
SW
12 mph
12 mph
0300
55°F
SW
10 mph
10 mph
