Current sea water temperature:
+66.4°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 9 | 66.4°F | April 4 | 68.9°F |
| April 8 | 67.5°F | April 3 | 67.6°F |
| April 7 | 70.3°F | April 2 | 66.4°F |
| April 6 | 70.5°F | April 1 | 64.4°F |
| April 5 | 70.3°F | March 31 | 63.7°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
April
April
| 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: 05:36
April 09, thursday
0600
61°F
SW
17 mph
17 mph
0900
63°F
SW
22 mph
22 mph
1200
64°F
SW
21 mph
21 mph
1500
68°F
SW
21 mph
21 mph
1800
68°F
SW
19 mph
19 mph
2100
64°F
SW
17 mph
17 mph
April 10, friday
0000
64°F
SW
16 mph
16 mph
0300
63°F
SW
14 mph
14 mph
