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.
You can expect around 8 hours of sunshine each day in which to get outside and see the sights of the island. Even if you have to dodge some raindrops, itâs worth a trip to the southern and eastern coasts, which sit on the Java Sea. The average sea temperature this month is 29Â°C (around 84Â°F), plenty warm for swimming.