Current sea water temperature:
+71.2°F
| Minimum sea water temperature in April: | 76.1°F |
| Maximum sea water temperature in April: | 61.9°F |
| Average sea water temperature in April: | 69.3°F |
| more information | |
14 days
forecast
forecast
| St. Simons Island |
monthly
weather
weather
| St. Simons Island |
Sea water temperature for the last 10 days:
| April 29 | 71.2°F | April 24 | 70.2°F |
| April 28 | 70.9°F | April 23 | 69.6°F |
| April 27 | 71.6°F | April 22 | 69.6°F |
| April 26 | 71.4°F | April 21 | 70.5°F |
| April 25 | 71.2°F | April 20 | 71.8°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
May
May
| 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: 08:24
April 29, wednesday
0900
73°F
NE
8 mph
8 mph
1200
79°F
N
7 mph
7 mph
1500
81°F
NW
9 mph
9 mph
1800
77°F
NW
12 mph
12 mph
2100
73°F
NW
11 mph
11 mph
April 30, thursday
0000
72°F
N
6 mph
6 mph
0300
70°F
E
9 mph
9 mph
0600
68°F
E
11 mph
11 mph
