Measurements:
°C
°F
St. George Island
70°F
N 12 mph
Feels like: 70°F
Precip: 0%
World Resorts USA St. George Island Weather

St. George Island Sea Water Temperature

Current Sea Water Temperature:
+67.8°F
Maximum Sea Water Temperature in December: 70.8°F
Minimum Sea Water Temperature in December: 55.4°F
Average water temperature in December: 64.7°F

Sea Water Temperature for the Last 10 Days:

December 05 67.8°F November 30 70.8°F
December 04 68.8°F November 29 70.4°F
December 03 68.8°F November 28 72.2°F
December 02 69.4°F November 27 74.4°F
December 01 70.0°F November 26 73.4°F

When is the Warmest Sea for St. George Island?

According to our data for the last three years for St. George 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: 2025 2024 2023

The average sea surface temperature in August 2025 for St. George Island was 90.5°F. The maximum and minimum values were 88.6°F and 92.2°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for St. George Island was 90.4°F. The maximum and minimum values were 89.0°F and 93.2°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for St. George Island was 87.3°F. The maximum and minimum values were 85.2°F and 89.0°F respectively.

Best Time to Visit St. George Island
The most sunny months:
October 20 days
March 16 days
November 15 days
The most warm months:
July 90.9 °F
August 90.7 °F
June 88.6 °F
Warmest sea temperature:
August 90.5 °F
July 89.5 °F
September 87.6 °F
The most cold months:
January 60.0 °F
December 64.0 °F
February 64.7 °F
The most rainy months:
August 5 days
April 4 days
July 4 days
The most windy months:
January 9 mph
March 9 mph
November 9 mph

St. George Island on the Weather Map

USA Resorts:
NAME
Chicago -2
Hawaii +78
Honolulu +78
Houston +44
Las Vegas +38
Los Angeles +50
Maui +70
Miami +68
Miami Beach +80
New York +16
San Diego +52
San Francisco +46
Sarasota +64
Tampa +62
Washington +26
24 Hours Weather Forecast
St. George Island
Local time: 04:51
05 dec, friday
0600 70°F
N
12 mph
0900 72°F
NE
8 mph
1200 74°F
NE
12 mph
1500 74°F
E
11 mph
1800 72°F
SE
9 mph
2100 62°F
S
9 mph
06 dec, saturday
0000 58°F
SW
7 mph
0300 56°F
SW
4 mph