All Countries
Hanahan, SC
Full City Profile · South Carolina · Colleton County County
3.5
/5.0
B+
Good
21,119
Population
2,009/sq mi density
$84,061
Median Income
$39,558 per capita
$339,800
Home Value
$407,348 Zillow
$1,324
Median Rent
34.8% income on rent
67°F
Avg Temperature
304 sunny days/yr
204
Violent Crime/100K
1,281 property/100K
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.4 / 5.0
$84,061 median income, 1.6% unemployment
A
Affordability
4.4 / 5.0
$339,800 home value, $1,324/mo rent
F
Safety
1.0 / 5.0
204 violent crimes/100K
A
Education
4.0 / 5.0
38.0% bachelor's degree or higher
Hanahan enjoys a temperate climate with an average annual temperature of 67°F (19°C). Winters average 50°F in January while summers reach 83°F in July. The area gets 304 sunny days per year. Annual precipitation totals 52.5 inches. The area receives 0.3 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
50°F Jan (10°C)
83°F Jul (28°C)
| Annual Average | 66.5°F |
| 23% above US avg | |
| January Average | 50°F (10°C) |
| July Average | 83°F (28°C) |
| Sunny Days | 304 days/yr |
Geography
| Elevation | 14 ft (4 m) |
| Area | 10.7 sq mi (27.7 km²) |
| Population Density | 2,009/sq mi |
| Coordinates | 32.9306°N, 80.0037°W |
| Timezone | America/New_York |
| County | Colleton County County |
| Nearest Airport | Charleston Afb/International (CHS) 3 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 85.5 / 100 |
| Social Vulnerability | 90.0 / 100 |
| Community Resilience | 45.2 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively High |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
| Coastal Flood | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1886 | CHARLESTON, SC | Earthquake | — | — | 3 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 50°F (10°C) | 4.0 in | Coldest |
| February | 51°F (10°C) | 3.2 in | |
| March | 58°F (14°C) | 4.2 in | |
| April | 64°F (18°C) | 2.8 in | |
| May | 72°F (22°C) | 3.6 in | |
| June | 78°F (25°C) | 5.5 in | |
| July | 83°F (28°C) | 5.9 in | Warmest |
| August | 80°F (27°C) | 6.8 in | Wettest |
| September | 76°F (24°C) | 5.5 in | |
| October | 66°F (19°C) | 3.1 in | |
| November | 58°F (15°C) | 2.5 in | Driest |
| December | 51°F (11°C) | 3.2 in |
Hanahan has a seasonal temperature swing of 33°F / from 50°F in January to 83°F in July. Total annual precipitation is 50.2 inches, with August being the wettest month (6.8") and November the driest (2.5").