TODAY AUG19
TEMPERATURE82
HUMIDITY79
PRESSURE29.98
WIND COND.190 8.1
  • 8977Sun20%
  • 8877Mon20%20%
  • 9177Tue20%30%
  • 8975Wed50%50%
  • 8674Thu50%50%
daynightWeather update from Mount Pleasant Regional-Faison Field at

Sullivan's Island Average Weather

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January38°F64°F50°F2.9"
February39°F66°F51°F3.7"
March45°F72°F58°F3.1"
April53°F80°F66°F3.4"
May62°F85°F73°F3.4"
June70°F91°F79°F6.6"
July73°F92°F82°F6.5"
August73°F91°F81°F8.0"
September68°F87°F76°F5.9"
October56°F80°F67°F5.6"
November45°F72°F57°F2.9"
December42°F67°F53°F3.7"

Did you know?

  • The highest monthly average temperature in Sullivan's Island for July is 82 degrees.
  • The lowest monthly average temperature in Sullivan's Island for January is 50 degrees.
  • The most monthly precipitation in Sullivan's Island occurs in August with 8 inches.
  • The air quality index in Sullivan's Island is 27% better than the national average.
  • The pollution index in Sullivan's Island is 84% better than the national average.

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Compare Sullivan's Island, SC Weather To Other Cities

Sullivan's Island air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
IndexSullivan's IslandSouth CarolinaNational
Air quality index363750
Pollution index783,5893,325,3185,066,862

Sullivan's Island air quality information

MeasurementTotal
Days measured365
Days with good air quality304
Days with moderate air quality61
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Sullivan's Island air quality information

PollutantTotal
Arsenic0.001%
Benzene0.010%
Carbon Tetrachloride0.001%
Lead0.003%
Mercury0.000%

Average monthly Sullivan's Island temperature with heat index

Sullivan's Island monthly precipitation with daily maximum

Sullivan's Island monthly snow depth with daily maximum

Sullivan's Island monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Charleston, SC129,8883628%
James Island, SC11,8443628%
Folly Beach, SC2,7323628%
Kiawah Island, SC1,5433628%
Hanahan, SC20,7103628%
Sullivan's Island, SC2,0493628%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Cetronia, PA2,049476%
Randolph, VT2,0493432%
Little River-Academy, TX2,0493628%
Courtland, VA2,0483922%
Wilson, WY2,0504020%
Sullivan's Island, SC2,0493628%
Source: The Sullivan's Island, SC weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.