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.
The weather in the Islands is about 10-15 Â°F (6-8 Â°C) cooler than Athens, and after watching the beautiful sunset, it gets chilly and cold. Be sure to pack a warm sweater and windbreaker jacket for the cool evenings and waterfront locations.