22.09
tue
tue
Day
86°F
W 6 mph
Precip.
13%
13%
Night
79°F
N 6 mph
Precip.
29%
29%
23.09
wed
wed
Day
82°F
SW 8 mph
Precip.
13%
13%
Night
75°F
SW 11 mph
Precip.
10%
10%
24.09
thu
thu
Day
73°F
S 12 mph
Precip.
21%
21%
Night
68°F
S 11 mph
Precip.
7%
7%
25.09
fri
fri
Day
73°F
S 9 mph
Precip.
2%
2%
Night
66°F
SW 9 mph
Precip.
2%
2%
26.09
sat
sat
Day
77°F
SW 4 mph
Precip.
1%
1%
Night
72°F
NE 6 mph
Precip.
12%
12%
27.09
sun
sun
Day
79°F
SW 4 mph
Precip.
6%
6%
Night
73°F
SW 6 mph
Precip.
4%
4%
28.09
mon
mon
Day
79°F
W 7 mph
Precip.
2%
2%
Night
75°F
NW 9 mph
Precip.
3%
3%
sea water
temperature
temperature
| Hilton Head Island |
monthly
weather
weather
| Hilton Head Island |
current
weather
weather
| Hilton Head Island |
14 days
forecast
forecast
| Hilton Head Island |
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 84.4°F. The highest and lowest sea temperatures during the month were 86.0°F and 83.1°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 72.9°F. The highest and lowest sea temperatures during the month were 79.2°F and 66.0°F.
Air temperature in Hilton Head Island, °F
Precipitation total in Hilton Head Island, in.
* Charts above show average data for the last 3 years.
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: 06:55
September 22, tuesday
0900
79°F
S
6 mph
6 mph
1200
86°F
W
6 mph
6 mph
1500
81°F
NW
12 mph
12 mph
1800
82°F
NW
9 mph
9 mph
2100
81°F
NW
6 mph
6 mph
September 23, wednesday
0000
79°F
N
6 mph
6 mph
0300
77°F
E
3 mph
3 mph
0600
75°F
S
6 mph
6 mph
