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 temperature on the island is fairly constant throughout the year, with highs during the day around 85 degrees Fahrenheit and lows at night around 75. Divers and snorkelers will love the warm water in the ocean, which typically measures above 80 degrees Fahrenheit. February through June is known as the dry season, while July through January is the wet season during which up to ten inches of rainfall occurs per month. Mosquitoes are most prevalent during the wet season. Humidity is high throughout the year, typically around 80%. Tropical storms and hurricanes are most frequent in the last summer and fall, and storms known as northers sometimes come in the winter, bringing cold temperatures and heavy winds.