Port Isabel, TX
Full City Profile · Texas · Cameron County County
2.8
/5.0
C+
Fair
5,098
Population
751/sq mi density
$50,775
Median Income
$24,871 per capita
$120,900
Home Value
$263,559 Zillow
$843
Median Rent
32.2% income on rent
75°F
Avg Temperature
408
Violent Crime/100K
4,136 property/100K
C+
Overall
2.8 / 5.0
Fair overall score based on economy, affordability, safety and education
B
Economy
3.0 / 5.0
$50,775 median income, 5.9% unemployment
A+
Affordability
5.0 / 5.0
$120,900 home value, $843/mo rent
F
Safety
1.0 / 5.0
408 violent crimes/100K (7% above avg)
C
Education
2.2 / 5.0
15.6% bachelor's degree or higher
Port Isabel has a warm climate with an average annual temperature of 75°F (24°C). Winters average 61°F in January while summers reach 85°F in July. Annual precipitation totals 23.3 inches. The area receives 0.2 inches of snow annually. Air quality is rated Moderate with a median AQI of 61.
Temperature
61°F Jan (16°C)
85°F Jul (30°C)
| Annual Average | 74.8°F |
| 39% above US avg | |
| January Average | 61°F (16°C) |
| July Average | 85°F (30°C) |
Geography
| Elevation | 4 ft (1 m) |
| Area | 6.8 sq mi (17.6 km²) |
| Population Density | 751/sq mi |
| Coordinates | 26.0630°N, 97.2467°W |
| Timezone | America/Chicago |
| County | Cameron County County |
| Nearest Airport | Brownsville/South Padre Island International (BRO) 16 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 61.0 |
| Rating | Moderate |
| Good Days % | 27.0% |
| Unhealthy Days | 61 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0363 ppm |
| PM2.5 (Fine Particles) | 9.4 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 97.3 / 100 |
| Social Vulnerability | 91.7 / 100 |
| Community Resilience | 6.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very High |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively Moderate |
| Hail | Relatively High |
| Strong Wind | Relatively High |
| Heat Wave | Relatively High |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Relatively High |
| Drought | Relatively Moderate |
| Cold Wave | Very High |
| Landslide | Very Low |
| Coastal Flood | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 61°F (16°C) | 1.0 in | Coldest, Driest |
| February | 65°F (18°C) | 1.2 in | |
| March | 70°F (21°C) | 1.1 in | |
| April | 75°F (24°C) | 1.3 in | |
| May | 81°F (27°C) | 2.1 in | |
| June | 84°F (29°C) | 2.7 in | |
| July | 85°F (30°C) | 1.4 in | |
| August | 85°F (30°C) | 1.3 in | Warmest |
| September | 83°F (28°C) | 5.3 in | Wettest |
| October | 77°F (25°C) | 2.7 in | |
| November | 69°F (21°C) | 1.9 in | |
| December | 63°F (17°C) | 1.3 in |
Port Isabel has a seasonal temperature swing of 24°F / from 61°F in January to 85°F in August. Total annual precipitation is 23.3 inches, with September being the wettest month (5.3") and January the driest (1.0").