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San Leon, TX
Full City Profile · Texas · Galveston County County
3.1
/5.0
B
Good
5,764
Population
1,213/sq mi density
$76,573
Median Income
$39,486 per capita
$166,700
Home Value
$237,398 Zillow
$1,152
Median Rent
48.4% income on rent
71°F
Avg Temperature
319 sunny days/yr
324
Violent Crime/100K
3,570 property/100K
B
Overall
3.1 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.5 / 5.0
$76,573 median income, 1.1% unemployment
A+
Affordability
5.0 / 5.0
$166,700 home value, $1,152/mo rent
F
Safety
1.0 / 5.0
324 violent crimes/100K
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 56°F in January while summers reach 85°F in July. The area gets 319 sunny days per year. Air quality is rated Good with a median AQI of 42.
Temperature
56°F Jan (13°C)
85°F Jul (29°C)
| Annual Average | 71.4°F |
| 32% above US avg | |
| January Average | 56°F (13°C) |
| July Average | 85°F (29°C) |
| Sunny Days | 319 days/yr |
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 | 42.0 |
| Rating | Good |
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 | 56°F (13°C) | 3.9 in | Coldest |
| February | 56°F (13°C) | 2.8 in | Driest |
| March | 63°F (17°C) | 2.8 in | |
| April | 69°F (20°C) | 2.9 in | |
| May | 76°F (24°C) | 4.2 in | |
| June | 81°F (27°C) | 5.0 in | |
| July | 85°F (29°C) | 4.3 in | Warmest |
| August | 83°F (28°C) | 4.1 in | |
| September | 80°F (26°C) | 6.3 in | Wettest |
| October | 72°F (22°C) | 3.7 in | |
| November | 63°F (17°C) | 4.0 in | |
| December | 56°F (13°C) | 3.7 in |
San Leon has a seasonal temperature swing of 29°F / from 56°F in January to 85°F in July. Total annual precipitation is 47.4 inches, with September being the wettest month (6.3") and February the driest (2.8").