Berkeley County Climate
Berkeley County, South Carolina
Avg Annual Temp
66.1°F
Annual Precip
52.3"
Annual Snowfall
0.0"
Extreme Heat Days
85.2
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Berkeley County Weather
Hot and wet Lowcountry climate
Berkeley averages 66.1°F, which is far warmer than the national median temperature. This humid subtropical area is quite wet, receiving 52.3 inches of rain annually.
Well above the state average heat
Berkeley is much warmer than the state average of 62.8°F, reflecting its typical Lowcountry climate. It is among the top-tier counties for heat in South Carolina.
Wetter than the coastal average
It is slightly cooler than coastal Beaufort at 67.5°F but wetter than the state average. The county experiences more rainfall at 52.3 inches than many of its inland neighbors.
Nearly three months of extreme heat
Summers are grueling with 85 extreme heat days and a July average of 83.4°F. Winters stay mild at 50.2°F, and the county records zero annual snowfall on average.
Prioritize drainage and high-efficiency AC
With 85 days of 90-degree heat, high-efficiency cooling and moisture control are vital for every home. Water management is also key given the high 52.3-inch annual rainfall.
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.