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Islandton, SC
Full City Profile · South Carolina · Colleton County County
3.1
/5.0
B
Good
54
Population
19/sq mi density
$38,250
Median Income
$25,650 per capita
$126,300
Home Value
$176,755 Zillow
64°F
Avg Temperature
304 sunny days/yr
704
Violent Crime/100K
5,706 property/100K
B
Overall
3.1 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.8 / 5.0
$38,250 median income, 0.0% unemployment
A+
Affordability
4.8 / 5.0
$126,300 home value, /mo rent
F
Safety
1.0 / 5.0
704 violent crimes/100K (85% above avg)
C+
Education
2.9 / 5.0
24.1% bachelor's degree or higher
Islandton enjoys a temperate climate with an average annual temperature of 64°F (18°C). Winters average 48°F in January while summers reach 80°F in July. The area gets 304 sunny days per year. Annual precipitation totals 53.6 inches. Air quality is rated Good with a median AQI of 43.
Temperature
48°F Jan (9°C)
80°F Jul (27°C)
| Annual Average | 64.3°F |
| 19% above US avg | |
| January Average | 48°F (9°C) |
| July Average | 80°F (27°C) |
| Sunny Days | 304 days/yr |
Geography
| Elevation | 60 ft (18 m) |
| Area | 2.8 sq mi (7.2 km²) |
| Population Density | 19/sq mi |
| Coordinates | 32.9093°N, 80.9359°W |
| Timezone | America/New_York |
| County | Colleton County County |
| Nearest Airport | Lowcountry Regional (RBW) 17 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 | — | — | 87 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 48°F (9°C) | 4.0 in | Coldest |
| February | 50°F (10°C) | 3.7 in | |
| March | 57°F (14°C) | 4.3 in | |
| April | 64°F (18°C) | 3.1 in | |
| May | 71°F (22°C) | 4.2 in | |
| June | 78°F (25°C) | 5.7 in | |
| July | 80°F (27°C) | 5.7 in | Warmest |
| August | 80°F (26°C) | 6.1 in | Wettest |
| September | 75°F (24°C) | 4.2 in | |
| October | 65°F (18°C) | 2.7 in | |
| November | 57°F (14°C) | 2.4 in | Driest |
| December | 50°F (10°C) | 3.5 in |
Islandton has a seasonal temperature swing of 32°F / from 48°F in January to 80°F in July. Total annual precipitation is 49.5 inches, with August being the wettest month (6.1") and November the driest (2.4").