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 islands have a cool temperate temperature, which fluctuates in a narrow range. Average monthly temperatures range from around 9 Â°C (48 Â°F) in January and February to around 2 Â°C (36 Â°F) in June and July, corresponding with summer and winter.