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.
During the summer months the temperature may occasionally reach the upper 30's but due to the cooling factor of the frequent winds an average of 28Â°C can be expected. Winters on the island are mild with an average temperature of 15Â°. It is only on very rare occasions the thermometer may reach freezing. Due to the moderating influence of the surrounding sea the island's temperatures are usually 2 degrees warmer in the winter and 2 degrees cooler in the summer than mainland Athens.