Sullivan's Island, SC Weather - Forecast & Monthly Averages

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TEMPERATURE	54
HUMIDITY	88
PRESSURE	101520
WIND COND.

Weather Quick Facts

The highest monthly average temperature in Sullivan's Island for July is 81.5 degrees
The lowest monthly average temperature in Sullivan's Island for January is 49.6 degrees
The most monthly precipitation in Sullivan's Island occurs in August with 8 inches
The air quality index in Sullivan's Island is 10% better than the national average
The pollution index in Sullivan's Island is 71% better than the national average

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Sullivan's Island Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	38°F	64°F	50°F	2.9"
February	39°F	66°F	51°F	3.7"
March	45°F	72°F	58°F	3.1"
April	53°F	80°F	66°F	3.4"
May	62°F	85°F	73°F	3.4"
June	70°F	91°F	79°F	6.6"
July	73°F	92°F	82°F	6.5"
August	73°F	91°F	81°F	8.0"
September	68°F	87°F	76°F	5.9"
October	56°F	80°F	67°F	5.6"
November	45°F	72°F	57°F	2.9"
December	42°F	67°F	53°F	3.7"

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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.
Index	Sullivan's Island	South Carolina	National
Air quality index	38	37	42
Pollution index	783,589	3,620,438	2,726,193

Sullivan's Island air quality

Measurement	Total
Days measured	355
Days with good air quality	299
Days with moderate air quality	55
Days w/ poor A.Q. for sensitive groups	1
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.001%
Benzene	0.010%
Carbon Tetrachloride	0.001%
Lead	0.003%
Mercury	0.000%

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	Population	Air Quality Index	National Avg.
Hanahan, SC	25,743	38	24.0%
Mount Pleasant, SC	89,410	38	24.0%
Isle of Palms, SC	4,371	38	24.0%
North Charleston, SC	113,880	38	24.0%
Charleston, SC	137,041	38	24.0%
Sullivan's Island, SC	2,177	38	24.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Prairie Creek, AR	2,176	44	12.0%
Mokuleia, HI	2,176	30	40.0%
Cedar Point, NC	2,176	37	26.0%
Fannett, TX	2,176	45	10.0%
Leslie, MI	2,178	36	28.0%
Sullivan's Island, SC	2,177	38	24.0%

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.