Dauphin Island, AL
Full City Profile · Alabama · Mobile County County
2.9
/5.0
C+
Fair
1,944
Population
311/sq mi density
$64,615
Median Income
$52,520 per capita
$387,400
Home Value
$459,788 Zillow
$1,750
Median Rent
37.5% income on rent
69°F
Avg Temperature
155
Violent Crime/100K
1,398 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
B
Economy
3.1 / 5.0
$64,615 median income, 12.7% unemployment
B
Affordability
3.3 / 5.0
$387,400 home value, $1,750/mo rent
F
Safety
1.0 / 5.0
155 violent crimes/100K
A
Education
4.2 / 5.0
40.1% bachelor's degree or higher
Dauphin Island enjoys a temperate climate with an average annual temperature of 69°F (21°C). Winters average 52°F in January while summers reach 83°F in July. Annual precipitation totals 61.1 inches. The area receives 0.0 inches of snow annually. Air quality is rated Good with a median AQI of 45.
Temperature
52°F Jan (11°C)
83°F Jul (28°C)
| Annual Average | 69.2°F |
| 28% above US avg | |
| January Average | 52°F (11°C) |
| July Average | 83°F (28°C) |
Geography
| Elevation | 4 ft (1 m) |
| Area | 166.0 sq mi (429.8 km²) |
| Population Density | 311/sq mi |
| Coordinates | 30.2509°N, 88.1713°W |
| Timezone | America/Chicago |
| County | Mobile County County |
| Nearest Airport | Trent Lott International (PGL) 26 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 45.0 |
| Rating | Good |
| Good Days % | 66.3% |
| Unhealthy Days | 0 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0424 ppm |
| SO₂ (Sulfur Dioxide) | 1.05 ppb |
| PM2.5 (Fine Particles) | 8.8 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 98.0 / 100 |
| Social Vulnerability | 53.9 / 100 |
| Community Resilience | 79.7 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very High |
| Earthquake | Relatively Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively High |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Very High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
| Coastal Flood | Relatively High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 52°F (11°C) | 5.2 in | Coldest |
| February | 55°F (13°C) | 4.4 in | |
| March | 61°F (16°C) | 4.9 in | |
| April | 68°F (20°C) | 5.2 in | |
| May | 76°F (24°C) | 5.0 in | |
| June | 81°F (27°C) | 5.9 in | |
| July | 83°F (28°C) | 6.8 in | Warmest, Wettest |
| August | 83°F (28°C) | 6.0 in | |
| September | 80°F (27°C) | 5.2 in | |
| October | 72°F (22°C) | 3.5 in | Driest |
| November | 62°F (17°C) | 3.9 in | |
| December | 55°F (13°C) | 5.1 in |
Dauphin Island has a seasonal temperature swing of 31°F / from 52°F in January to 83°F in July. Total annual precipitation is 61.1 inches, with July being the wettest month (6.8") and October the driest (3.5").