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.
Sea Island Weather Forecast for Sunday, August 27. The Sea Island, GA forecast for Aug 27 is 73 degrees and Partly cloudy . There is 63 percentage chance of rain and 5 mph winds from the East.