Bonsall, CA
Full City Profile · California · Orange County County
3.6
/5.0
B+
Good
4,308
Population
316/sq mi density
$110,316
Median Income
$59,884 per capita
$938,100
Home Value
$1,010,251 Zillow
$2,177
Median Rent
40.1% income on rent
63°F
Avg Temperature
B+
Overall
3.6 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.3 / 5.0
$110,316 median income, 5.4% unemployment
D
Affordability
1.9 / 5.0
$938,100 home value, $2,177/mo rent
A+
Education
4.7 / 5.0
46.2% bachelor's degree or higher
Bonsall enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 56°F in January while summers reach 71°F in July. Annual precipitation totals 13.4 inches. The area receives 0.0 inches of snow annually. Air quality is rated Moderate with a median AQI of 54.
Temperature
56°F Jan (13°C)
71°F Jul (21°C)
| Annual Average | 62.7°F |
| 16% above US avg | |
| January Average | 56°F (13°C) |
| July Average | 71°F (21°C) |
Geography
| Elevation | 379 ft (116 m) |
| Area | 13.6 sq mi (35.1 km²) |
| Population Density | 316/sq mi |
| Coordinates | 33.2749°N, 117.1919°W |
| Timezone | America/Los_Angeles |
| County | Orange County County |
| Nearest Airport | San Diego International (SAN) 37 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 54.0 |
| Rating | Moderate |
| Good Days % | 32.5% |
| Unhealthy Days | 16 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0440 ppm |
| NO₂ (Nitrogen Dioxide) | 18.4 ppb |
| CO (Carbon Monoxide) | 0.35 ppm |
| PM2.5 (Fine Particles) | 9.7 μg/m³ |
Natural Hazard Risk
| Overall Risk | Very High |
| Risk Score | 99.8 / 100 |
| Social Vulnerability | 24.9 / 100 |
| Community Resilience | 16.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | No Rating |
| Earthquake | Very High |
| Wildfire | Relatively High |
| Flood | Very High |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively High |
| Winter Weather | Very Low |
| Lightning | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | No Rating |
| Landslide | Relatively High |
| Coastal Flood | Relatively High |
| Tsunami | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
2 tsunamis recorded within 500 km. Highest wave on record: 1.2 m (4 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1862 | S. CALIFORNIA | Eruption + Earthquake | 1.2 m | - | 64 km |
| 1855 | S. CALIFORNIA | Eruption + Earthquake | - | - | 124 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
1 volcano within 200 km. Closest: Salton Buttes (147 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Salton Buttes | Lava dome(s) | -40 m (-131 ft) | 210 | 147 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 56°F (13°C) | 2.9 in | |
| February | 56°F (13°C) | 3.1 in | Wettest |
| March | 58°F (14°C) | 2.1 in | |
| April | 60°F (16°C) | 1.0 in | |
| May | 63°F (17°C) | 0.4 in | |
| June | 67°F (19°C) | 0.1 in | |
| July | 71°F (21°C) | 0.1 in | |
| August | 72°F (22°C) | 0.0 in | Warmest, Driest |
| September | 71°F (22°C) | 0.2 in | |
| October | 66°F (19°C) | 0.6 in | |
| November | 60°F (16°C) | 1.1 in | |
| December | 55°F (13°C) | 1.9 in | Coldest |
Bonsall has a seasonal temperature swing of 17°F / from 55°F in December to 72°F in August. Total annual precipitation is 13.4 inches, with February being the wettest month (3.1") and August the driest (0.0").