San Leon, TX
Full City Profile · Texas · Galveston County County
3.8
/5.0
B+
Good
5,764
Population
1,213/sq mi density
$76,573
Median Income
$39,486 per capita
$166,700
Home Value
$243,232 Zillow
$1,152
Median Rent
48.4% income on rent
71°F
Avg Temperature
B+
Overall
3.8 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.5 / 5.0
$76,573 median income, 1.7% unemployment
A+
Affordability
5.0 / 5.0
$166,700 home value, $1,152/mo rent
D
Education
1.8 / 5.0
10.5% bachelor's degree or higher
San Leon has a warm climate with an average annual temperature of 71°F (22°C). Winters average 55°F in January while summers reach 84°F in July. Annual precipitation totals 60.2 inches. The area receives 0.2 inches of snow annually. Air quality is rated Good with a median AQI of 44.
Temperature
55°F Jan (13°C)
84°F Jul (29°C)
| Annual Average | 70.5°F |
| 31% above US avg | |
| January Average | 55°F (13°C) |
| July Average | 84°F (29°C) |
Geography
| Elevation | 8 ft (2 m) |
| Area | 4.8 sq mi (12.3 km²) |
| Population Density | 1,213/sq mi |
| Coordinates | 29.4911°N, 94.9414°W |
| Timezone | America/Chicago |
| County | Galveston County County |
| Nearest Airport | Scholes International At Galveston (GLS) 16 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 44.0 |
| Rating | Good |
| Good Days % | 67.7% |
| Unhealthy Days | 8 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0439 ppm |
| NO₂ (Nitrogen Dioxide) | 5.3 ppb |
| SO₂ (Sulfur Dioxide) | 0.50 ppb |
| PM2.5 (Fine Particles) | 9.7 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 95.4 / 100 |
| Social Vulnerability | 32.4 / 100 |
| Community Resilience | 97.7 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Relatively High |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively High |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very Low |
| Lightning | Very High |
| Ice Storm | Relatively High |
| Drought | Relatively High |
| Cold Wave | Very High |
| Landslide | Very Low |
| Coastal Flood | Relatively High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 55°F (13°C) | 4.8 in | Coldest |
| February | 59°F (15°C) | 3.0 in | Driest |
| March | 64°F (18°C) | 3.3 in | |
| April | 70°F (21°C) | 4.2 in | |
| May | 77°F (25°C) | 5.1 in | |
| June | 82°F (28°C) | 6.5 in | |
| July | 84°F (29°C) | 4.4 in | |
| August | 84°F (29°C) | 6.6 in | Warmest |
| September | 80°F (27°C) | 7.3 in | Wettest |
| October | 72°F (22°C) | 5.8 in | |
| November | 63°F (17°C) | 4.5 in | |
| December | 57°F (14°C) | 4.5 in |
San Leon has a seasonal temperature swing of 29°F / from 55°F in January to 84°F in August. Total annual precipitation is 60.2 inches, with September being the wettest month (7.3") and February the driest (3.0").