Georgetown County Climate
Georgetown County, South Carolina
Avg Annual Temp
64.0°F
Annual Precip
53.8"
Annual Snowfall
—
Extreme Heat Days
51.45
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Georgetown County Weather
A mild maritime climate
Georgetown County's 64.0°F average annual temperature is significantly higher than the national median. Ocean breezes help moderate the extremes found in more continental locations.
Wetter than the state average
The county receives 53.8 inches of annual rain, far exceeding the South Carolina average of 48.9 inches. Its 64.0°F temperature is also 1.2 degrees warmer than the state mean.
High humidity and coastal rain
Georgetown is notably wetter than many neighbors, with 53.8 inches of rain annually. The ocean influence keeps it warmer than inland counties, averaging 64.0°F year-round.
Moderate heat and mild winters
There are 51 days of extreme heat annually, which is fewer than inland areas due to coastal cooling. Winter is pleasant with a 48.4°F average, and snowfall data remains unavailable for this seaside region.
Gear up for heavy rain
With 53.8 inches of annual precipitation, high-quality rain gear and home moisture control are vital. Residents enjoy fewer 90-degree days than inland neighbors, but humidity remains a constant factor.
Frequently Asked Questions
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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.