Current sea water temperature:
+86.5°F
| Minimum sea water temperature in July: | 87.6°F |
| Maximum sea water temperature in July: | 80.6°F |
| Average sea water temperature in July: | 84.7°F |
| more information | |
14 days
forecast
forecast
| St. Simons Island |
monthly
weather
weather
| St. Simons Island |
Sea water temperature for the last 10 days:
| July 21 | 86.5°F | July 16 | 85.3°F |
| July 20 | 86.4°F | July 15 | 85.5°F |
| July 19 | 86.4°F | July 14 | 85.8°F |
| July 18 | 86.0°F | July 13 | 86.2°F |
| July 17 | 86.0°F | July 12 | 86.4°F |
Monthly sea water temperature, °F
When is the warmest sea in St. Simons Island?
Based on the data about daily sea water temperature for the last three years the warmest sea in St. Simons Island was noticed in August, July and September.
Monthly Sea Temperatures in St. Simons Island, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 85.7°F. The highest and lowest sea temperatures during the month were 87.6°F and 83.5°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 85.8°F. The highest and lowest sea temperatures during the month were 86.9°F and 84.2°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 80.7°F. The highest and lowest sea temperatures during the month were 83.5°F and 77.9°F.
current
weather
weather
| St. Simons Island |
weather in
July
July
| St. Simons Island |
Best time for vacation in St. Simons Island
St. Simons Island on a weather map
Places in USA:
Name
°F
24 Hours Forecast
St. Simons Island
Local time: 09:27
July 21, tuesday
1200
93°F
N
15 mph
15 mph
1500
91°F
NW
16 mph
16 mph
1800
84°F
N
15 mph
15 mph
2100
84°F
N
11 mph
11 mph
July 22, wednesday
0000
82°F
NE
9 mph
9 mph
0300
81°F
NE
7 mph
7 mph
0600
79°F
NE
9 mph
9 mph
0900
84°F
NE
10 mph
10 mph
