The climate in 29403 Charleston, SC is generally mild and humid with frequent rain throughout the year. Summers are hot and humid with temperatures usually reaching into the 80s and 90s while winters are cooler with temperatures typically staying in the 50s. The city averages around 205 sunny days a year and approximately 43 inches of rain annually. Because of its location on the Atlantic coast, Charleston can also experience strong winds throughout the year.
Charleston (zip 29403), South Carolina gets 48 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Charleston (zip 29403) 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 Charleston (zip 29403). The US average is 205 sunny days.
Charleston (zip 29403) 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