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.
1 * Average low temperature is 15Â°C/59Â°F. * 2  Average high temperature is 24Â°C/75Â°F. * 3  Average rainfall is 412 mm/16 inches per year. * 4  Sea temperatures range from 19Â°C/66Â°F to 24Â°C/75Â°F. * 5  Average number of sunshine hours ranges from 7 to 11 hours per day.he most important weather conditions to be aware of are: * 1  Average temperatures. * 2  Average high and low temperatures. * 3  Average rainfall. * 4  Average sea temperatures. * 5  Average number of sunshine hours. * 6  Average number of fog days. * 7  Average number of snow days.