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.
Temperature variations between night and day tend to be fairly limited during summer with a difference that can reach 18 degrees Fahrenheit, and moderate during winter with an average difference of 23 degrees Fahrenheit. The annual average precipitation at Oak Island is 60.99 Inches. Summer months tend to be wetter than winter months. The wettest month of the year is September with an average rainfall of 8.93 Inches. (SOUTHPORT 5 N Weather station, 9.96 miles from Oak Island)