Measurements:
°C
°F
St. Simons Island
78°F
NW 14 mph
Feels like: 80°F
Precip: 64%
World Resorts USA St. Simons Island Weather

St. Simons Island Sea Water Temperature

Current Sea Water Temperature:
+73.6°F
Maximum Sea Water Temperature in April: 77.0°F
Minimum Sea Water Temperature in April: 63.2°F
Average water temperature in April: 71.0°F

Sea Water Temperature for the Last 10 Days:

April 27 73.6°F April 22 74.6°F
April 26 73.4°F April 21 74.2°F
April 25 72.2°F April 20 73.8°F
April 24 72.0°F April 19 71.8°F
April 23 72.8°F April 18 70.6°F

When is the Warmest Sea for St. Simons Island?

According to our data for the last three years for St. Simons Island the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2023 2022 2021

The average sea surface temperature in August 2023 for St. Simons Island was 90.3°F. The maximum and minimum values were 89.0°F and 92.0°F respectively.

Sea Water Temperature in July

Select Year: 2023 2022 2021

The average sea surface temperature in July 2023 for St. Simons Island was 88.6°F. The maximum and minimum values were 86.8°F and 90.6°F respectively.

Sea Water Temperature in September

Select Year: 2023 2022 2021

The average sea surface temperature in September 2023 for St. Simons Island was 85.4°F. The maximum and minimum values were 81.2°F and 89.6°F respectively.

Best Time to Visit St. Simons Island
The most sunny months:
October 15 days
April 15 days
January 14 days
The most warm months:
July 92.7 °F
August 92.1 °F
June 90.1 °F
Warmest sea temperature:
August 89.1 °F
July 88.3 °F
September 85.9 °F
The most cold months:
January 62.7 °F
December 65.3 °F
February 67.2 °F
The most rainy months:
August 6 days
July 6 days
September 5 days
The most windy months:
April 6 mph
March 6 mph
January 6 mph

St. Simons Island on the Weather Map

USA Resorts:
NAME
Boston +64
Chicago +66
Hawaii +78
Honolulu +78
Houston +88
Las Vegas +74
Los Angeles +72
Miami +80
New York +56
Orlando +88
San Diego +66
San Francisco +58
Sarasota +88
Tampa +90
Washington +54
24 Hours Weather Forecast
St. Simons Island
Local time: 14:25
27 apr, saturday
1500 78°F
NW
14 mph
1800 74°F
NW
14 mph
2100 74°F
W
14 mph
28 apr, sunday
0000 72°F
W
15 mph
0300 72°F
NW
12 mph
0600 72°F
NW
12 mph
0900 74°F
NW
12 mph
1200 76°F
W
11 mph