Current sea water temperature:
+79.2°F
| Minimum sea water temperature in May: | 81.3°F |
| Maximum sea water temperature in May: | 69.4°F |
| Average sea water temperature in May: | 75.0°F |
| more information | |
14 days
forecast
forecast
| Hilton Head Island |
monthly
weather
weather
| Hilton Head Island |
Sea water temperature for the last 10 days:
| May 25 | 79.2°F | May 20 | 75.2°F |
| May 24 | 78.3°F | May 19 | 75.7°F |
| May 23 | 78.1°F | May 18 | 74.3°F |
| May 22 | 77.2°F | May 17 | 72.0°F |
| May 21 | 77.4°F | May 16 | 72.9°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
May
May
| 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: 21:57
May 26, tuesday
0000
77°F
N
16 mph
16 mph
0300
77°F
N
16 mph
16 mph
0600
77°F
N
16 mph
16 mph
0900
77°F
N
14 mph
14 mph
1200
81°F
N
14 mph
14 mph
1500
81°F
N
13 mph
13 mph
1800
79°F
N
13 mph
13 mph
2100
77°F
N
9 mph
9 mph
