An amount below 100 means Dayton, Ohio is cheaper than the US average. A cost of living index above 100 means Dayton, Ohio is more expensive.
Sea Island, GA Weather. The average temperature of Sea Island is 67.50Â°F, which is much higher than the Georgia average temperature of 62.30Â°F and is much higher than the national average temperature of 54.45Â°F. Historical Weather.
Today's St George Island sea temperature is 24.5 Â°C. Warm in and out of the water temperature at St George Island today, but forecast to be overcast. With sea temperatures of 24 Â°C and a wind chill of 23 Â°C, most surfers will choose a shorty or a summer suit or just board shorts.