Castroville, CA
Full City Profile · California · San Benito County County
2.8
/5.0
C+
Fair
6,870
Population
6,735/sq mi density
$90,486
Median Income
$20,260 per capita
$648,700
Home Value
$675,080 Zillow
$1,593
Median Rent
29.2% income on rent
58°F
Avg Temperature
C+
Overall
2.8 / 5.0
Fair overall score based on economy, affordability, safety and education
A
Economy
4.3 / 5.0
$90,486 median income, 2.8% unemployment
C+
Affordability
2.6 / 5.0
$648,700 home value, $1,593/mo rent
F
Education
1.5 / 5.0
5.7% bachelor's degree or higher
Castroville enjoys a temperate climate with an average annual temperature of 58°F (14°C). Winters average 52°F in January while summers reach 63°F in July. Annual precipitation totals 12.6 inches. The area receives 0.0 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
52°F Jan (11°C)
63°F Jul (17°C)
| Annual Average | 58.1°F |
| 8% above US avg | |
| January Average | 52°F (11°C) |
| July Average | 63°F (17°C) |
Geography
| Elevation | 28 ft (9 m) |
| Area | 1.0 sq mi (2.6 km²) |
| Population Density | 6,735/sq mi |
| Coordinates | 36.7648°N, 121.7534°W |
| Timezone | America/Los_Angeles |
| County | San Benito County County |
| Nearest Airport | Monterey Regional (MRY) 13 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
| Good Days % | 71.0% |
| Unhealthy Days | 1 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0408 ppm |
| PM2.5 (Fine Particles) | 4.1 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 85.2 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 56.0 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively Moderate |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Very Low |
| Drought | Relatively High |
| Cold Wave | No Rating |
| Landslide | Relatively Moderate |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
6 tsunamis recorded within 500 km. Highest wave on record: 4.5 m (15 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1868 | N. CALIFORNIA | Eruption + Earthquake | 4.5 m | 30 | 108 km |
| 1989 | N. CALIFORNIA | Earthquake | 1.0 m | 62 | 32 km |
| 1856 | N. CALIFORNIA | Eruption + Earthquake | 0.6 m | - | 95 km |
| 1906 | N. CALIFORNIA | Eruption + Earthquake | 0.1 m | - | 123 km |
| 1901 | MONTEREY BAY, N. CALIFORNIA | Eruption + Earthquake | - | - | 141 km |
| 1865 | N. CALIFORNIA | Eruption + Earthquake | - | - | 50 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 52°F (11°C) | 2.6 in | Wettest |
| February | 53°F (12°C) | 2.4 in | |
| March | 55°F (13°C) | 2.1 in | |
| April | 57°F (14°C) | 1.0 in | |
| May | 59°F (15°C) | 0.4 in | |
| June | 62°F (16°C) | 0.1 in | |
| July | 63°F (17°C) | 0.0 in | Driest |
| August | 64°F (18°C) | 0.0 in | |
| September | 64°F (18°C) | 0.1 in | Warmest |
| October | 62°F (16°C) | 0.6 in | |
| November | 56°F (13°C) | 1.3 in | |
| December | 51°F (11°C) | 2.1 in | Coldest |
Castroville has a seasonal temperature swing of 13°F / from 51°F in December to 64°F in September. Total annual precipitation is 12.6 inches, with January being the wettest month (2.6") and July the driest (0.0").