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Seaford, DE
Full City Profile · Delaware · Sussex County County
2.6
/5.0
C+
Fair
8,255
Population
1,625/sq mi density
$51,120
Median Income
$27,851 per capita
$223,700
Home Value
$305,354 Zillow
$1,148
Median Rent
33.0% income on rent
55°F
Avg Temperature
293 sunny days/yr
851
Violent Crime/100K
5,972 property/100K
C+
Overall
2.6 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Economy
2.8 / 5.0
$51,120 median income, 7.9% unemployment
A
Affordability
4.2 / 5.0
$223,700 home value, $1,148/mo rent
F
Safety
1.0 / 5.0
851 violent crimes/100K (124% above avg)
C
Education
2.4 / 5.0
17.5% bachelor's degree or higher
Seaford experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 35°F in January while summers reach 77°F in July. The area gets 293 sunny days per year. Annual precipitation totals 46.3 inches. The area receives 12.8 inches of snow annually. Air quality is rated Good with a median AQI of 41.
Temperature
35°F Jan (1°C)
77°F Jul (25°C)
| Annual Average | 55.4°F |
| 3% above US avg | |
| January Average | 35°F (1°C) |
| July Average | 77°F (25°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 31 ft (9 m) |
| Area | 5.1 sq mi (13.2 km²) |
| Population Density | 1,625/sq mi |
| Coordinates | 38.6573°N, 75.6134°W |
| Timezone | America/New_York |
| County | Sussex County County |
| Nearest Airport | Salisbury-Ocean City Wicomico Regional (SBY) 23 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0463 ppm |
| SO₂ (Sulfur Dioxide) | 0.20 ppb |
| PM2.5 (Fine Particles) | 8.6 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 94.2 / 100 |
| Social Vulnerability | 70.4 / 100 |
| Community Resilience | 59.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively High |
| Earthquake | Relatively Low |
| Wildfire | Relatively Low |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very High |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Very Low |
| Coastal Flood | Very High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1840 | PHILADELPHIA, PENNSYLVANIA | Earthquake | — | — | 132 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 35°F (1°C) | 3.9 in | Coldest |
| February | 37°F (3°C) | 3.1 in | Driest |
| March | 45°F (7°C) | 4.3 in | |
| April | 54°F (12°C) | 3.4 in | |
| May | 64°F (18°C) | 3.9 in | |
| June | 72°F (22°C) | 3.5 in | |
| July | 77°F (25°C) | 4.3 in | Warmest, Wettest |
| August | 75°F (24°C) | 4.3 in | |
| September | 69°F (21°C) | 3.8 in | |
| October | 58°F (14°C) | 3.3 in | |
| November | 48°F (9°C) | 3.2 in | |
| December | 39°F (4°C) | 3.5 in |
Seaford has a seasonal temperature swing of 42°F / from 35°F in January to 77°F in July. Total annual precipitation is 44.5 inches, with July being the wettest month (4.3") and February the driest (3.1").