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 average annual temperature is 85Â°F (29Â°C), and ranges from the upper 80's during the Summer months and the low 80's during the Winter months (November-February).The occasional cold front sweeps through the island, generally 3-4 times a year, dropping the temperature into the high 60's (18-20Â°C) for a few days.he Bay Islands are known for their outstanding climate.The average yearly rain fall is 100 inches (254 cm), creating a lush green tropical island paradise all year round. Average Utila Annual Temperatures.