Current sea water temperature:
+84.0°F
| Minimum sea water temperature in June: | 85.3°F |
| Maximum sea water temperature in June: | 74.3°F |
| Average sea water temperature in June: | 81.2°F |
| more information | |
14 days
forecast
forecast
| St. Simons Island |
monthly
weather
weather
| St. Simons Island |
Sea water temperature for the last 10 days:
| June 29 | 84.0°F | June 24 | 82.0°F |
| June 28 | 84.0°F | June 23 | 82.0°F |
| June 27 | 83.5°F | June 22 | 81.5°F |
| June 26 | 82.6°F | June 21 | 81.7°F |
| June 25 | 81.9°F | June 20 | 82.4°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:
2025
2024
2023
The average sea water temperature in July of 2025 was 84.5°F. The highest and lowest sea temperatures during the month were 87.6°F and 81.7°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: 18:29
June 29, monday
2100
84°F
NW
5 mph
5 mph
June 30, tuesday
0000
82°F
NE
6 mph
6 mph
0300
81°F
NE
2 mph
2 mph
0600
81°F
S
3 mph
3 mph
0900
82°F
SW
7 mph
7 mph
1200
88°F
SW
11 mph
11 mph
1500
86°F
W
13 mph
13 mph
1800
84°F
W
11 mph
11 mph
