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 Saturday, August 19. Countries/United States/ Georgia/ Sea Island. The Sea Island, GA forecast for Aug 19 is 78 degrees and Partly cloudy . There is 74 percentage chance of rain and 6 mph winds from the West.