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.
April Atlantic Ocean Water Temperatures. Average April Atlantic Ocean water temperatures tend to range from a chilly low to mid 50 degrees in Virginia, to the mid to high 60 degree marks in South Carolina and Georgia, reaching into the mid to upper 70 degree range in mid Florida.1 of 6 Show All.pril brings idyllic spring temperatures and flowers gardens bursting with spring color in many areas of the Southeast. High average temperatures tend to range from the upper 60s to uppers 70s with low average temperatures in the high 40s and 50s in most areas. State-by-State Average April Weather Tables.