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.
Sea temperatures (30 Â°C) very warm too. Staying comfortable in the water at Anna Maria Island won't be a problem, but wear at least a rash-vest to keep the UV off. (click thumbnails to expand) Below is a graph of Historical Sea Surface Temperature for Anna Maria Island.