Average Annual Precipitation for South Carolina

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The tables below give yearly averages for rainfall plus snowfall at cities, towns and parks in South Carolina.

Each place has a total for the amount of precipitation it usually receives in a year. Most locations also have information on the number of days with wet weather. That includes the days when precipitation amounts to 0.01 inches (0.25 millimetres) or more.

The annual precipitation totals are averages based on weather data collected from 1981 to 2010 for the NOAA National Climatic Data Center.

You can jump to a separate table for each region of the state: Coast & Lowcountry, Midlands and Upstate.

Coast & Lowcountry

Average yearly precipitation
Days Place Inches Millimetres
106 Beaufort 45.4 1152
100 Brookgreen Gardens 54.2 1376
113 Charleston 51.0 1296
  90 Edisto Island 45.4 1154
  96 Georgetown 56.2 1428
100 Hilton Head Island 50.3 1278
128 McClellanville 52.2 1325
  – Myrtle Beach 51.4 1305
105 Lake Moultrie (Pinopolis Dam) 49.6 1260
104 Sullivan's Island 49.7 1263

Midlands

Annual averages for rainfall plus snowfall
Days Place Inches Millimetres
108 Clarks Hill 45.1 1144
113 Columbia 46.3 1176
106 Florence 42.9 1090
107 Orangeburg 47.0 1193
110 Sumter 46.9 1192

Upstate South Carolina

Average amount of rain and snow a year
Days Place Inches Millimetres
  93 Anderson 48.4 1228
127 Caesars Head State Park 70.0 1779
102 Calhoun Falls 44.4 1129
114 Greer 47.2 1199
  – Longcreek 62.1 1576
104 Ninety Nine Islands Reservoir 46.0 1169
  99 Spartanburg 48.4 1230
Reference

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

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