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.
March Atlantic Ocean Water Temperatures Average March Atlantic Ocean water temperatures tend to range from about 46 to 52 cold degrees in Virginia, around 57 degrees in South Carolina and from about 60 to 70 degrees from Georgia to mid-Florida.