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Swansea, SC
Full City Profile · South Carolina · Lexington County County
2.7
/5.0
C+
Fair
700
Population
335/sq mi density
$49,271
Median Income
$25,292 per capita
$112,500
Home Value
$172,451 Zillow
$983
Median Rent
26.9% income on rent
64°F
Avg Temperature
304 sunny days/yr
521
Violent Crime/100K
3,858 property/100K
C+
Overall
2.7 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Economy
2.8 / 5.0
$49,271 median income, 4.1% unemployment
A+
Affordability
5.0 / 5.0
$112,500 home value, $983/mo rent
F
Safety
1.0 / 5.0
521 violent crimes/100K (37% above avg)
C
Education
2.0 / 5.0
12.7% bachelor's degree or higher
Swansea enjoys a temperate climate with an average annual temperature of 64°F (18°C). Winters average 46°F in January while summers reach 83°F in July. The area gets 304 sunny days per year. Annual precipitation totals 54.5 inches. Air quality is rated Good with a median AQI of 43.
Temperature
46°F Jan (8°C)
83°F Jul (28°C)
| Annual Average | 64.0°F |
| 19% above US avg | |
| January Average | 46°F (8°C) |
| July Average | 83°F (28°C) |
| Sunny Days | 304 days/yr |
Geography
| Elevation | 321 ft (98 m) |
| Area | 2.0 sq mi (5.3 km²) |
| Population Density | 335/sq mi |
| Coordinates | 33.7400°N, 81.1045°W |
| Timezone | America/New_York |
| County | Lexington County County |
| Nearest Airport | Aiken Regional (AIK) 34 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| PM2.5 (Fine Particles) | 7.8 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 90.9 / 100 |
| Social Vulnerability | 22.4 / 100 |
| Community Resilience | 46.3 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively High |
| Ice Storm | Very High |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
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 | — | — | 139 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 46°F (8°C) | 4.5 in | Coldest |
| February | 48°F (9°C) | 3.7 in | |
| March | 55°F (13°C) | 4.5 in | |
| April | 63°F (17°C) | 2.8 in | Driest |
| May | 70°F (21°C) | 3.4 in | |
| June | 77°F (25°C) | 4.9 in | |
| July | 83°F (28°C) | 5.1 in | Warmest, Wettest |
| August | 79°F (26°C) | 4.9 in | |
| September | 74°F (23°C) | 3.8 in | |
| October | 63°F (17°C) | 3.1 in | |
| November | 55°F (13°C) | 2.9 in | |
| December | 47°F (8°C) | 3.4 in |
Swansea has a seasonal temperature swing of 37°F / from 46°F in January to 83°F in July. Total annual precipitation is 47.0 inches, with July being the wettest month (5.1") and April the driest (2.8").