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Seaford, NY
Full City Profile · New York · Nassau County County
3.6
/5.0
B+
Good
15,884
Population
6,086/sq mi density
$156,488
Median Income
$61,645 per capita
$631,000
Home Value
$774,447 Zillow
$2,612
Median Rent
33.6% income on rent
54°F
Avg Temperature
275 sunny days/yr
119
Violent Crime/100K
785 property/100K
B+
Overall
3.6 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.7 / 5.0
$156,488 median income, 4.0% unemployment
A
Affordability
4.4 / 5.0
$631,000 home value, $2,612/mo rent
F
Safety
1.0 / 5.0
119 violent crimes/100K
A
Education
4.5 / 5.0
43.6% bachelor's degree or higher
Seaford experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 32°F in January while summers reach 75°F in July. The area gets 275 sunny days per year. Annual precipitation totals 38.3 inches. Air quality is rated Good with a median AQI of 36.
Temperature
32°F Jan (0°C)
75°F Jul (24°C)
| Annual Average | 53.5°F |
| 1% below US avg | |
| January Average | 32°F (0°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 12 ft (4 m) |
| Area | 2.7 sq mi (6.9 km²) |
| Population Density | 6,086/sq mi |
| Coordinates | 40.6662°N, 73.4926°W |
| Timezone | America/New_York |
| County | Nassau County County |
| Nearest Airport | John F Kennedy International (JFK) 15 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 36.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 97.1 / 100 |
| Social Vulnerability | 25.9 / 100 |
| Community Resilience | 97.0 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively High |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very High |
| Lightning | Very High |
| Ice Storm | Very High |
| Drought | Very Low |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
| Coastal Flood | Very High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
2 tsunamis recorded within 500 km. Highest wave on record: 0.3 m (1 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1964 | LONG ISLAND, NY | Meteorological | 0.3 m | — | 36 km |
| 1895 | HIGH BRIDGE, NJ | Earthquake | — | — | 117 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (0°C) | 3.3 in | Coldest |
| February | 33°F (1°C) | 3.1 in | |
| March | 41°F (5°C) | 4.1 in | |
| April | 49°F (10°C) | 3.6 in | |
| May | 59°F (15°C) | 3.5 in | |
| June | 68°F (20°C) | 2.7 in | Driest |
| July | 75°F (24°C) | 3.2 in | Warmest |
| August | 73°F (23°C) | 4.2 in | Wettest |
| September | 66°F (19°C) | 3.1 in | |
| October | 55°F (13°C) | 3.2 in | |
| November | 46°F (8°C) | 3.7 in | |
| December | 37°F (3°C) | 3.6 in |
Seaford has a seasonal temperature swing of 43°F / from 32°F in January to 75°F in July. Total annual precipitation is 41.1 inches, with August being the wettest month (4.2") and June the driest (2.7").