29482 Sullivans Island, SC is located in a subtropical climate zone, characterized by hot, humid summers and mild winters. The area experiences plenty of sunshine throughout the year and enjoys an average temperature of around 73°F in the summer months and 50°F in the winter. The region receives an average of 49 inches of rain per year with about 97 days with some measureable rainfall. During summer months, thunderstorms are frequent due to the high humidity levels.
Sullivans Island (zip 29482), South Carolina gets 48 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Sullivans Island (zip 29482) averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 211 sunny days per year in Sullivans Island (zip 29482). The US average is 205 sunny days.
Sullivans Island (zip 29482) gets some kind of precipitation, on average, 106 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 90 degrees
Winter Low: the January low is 39
Rain: averages 48 inches of rain a year
Snow: averages 0 inches of snow a year