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Dillon Beach, CA
Full City Profile · California · Marin County County
3.3
/5.0
B
Good
224
Population
75/sq mi density
$206,793
Median Income
$231,676 per capita
$1,564,200
Home Value
$1,391,817 Zillow
58°F
Avg Temperature
290 sunny days/yr
131
Violent Crime/100K
1,622 property/100K
B
Overall
3.3 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
5.0 / 5.0
$206,793 median income, 0.0% unemployment
C
Affordability
2.4 / 5.0
$1,564,200 home value, /mo rent
F
Safety
1.0 / 5.0
131 violent crimes/100K
A+
Education
5.0 / 5.0
95.1% bachelor's degree or higher
Dillon Beach enjoys a temperate climate with an average annual temperature of 58°F (14°C). Winters average 49°F in January while summers reach 65°F in July. The area gets 290 sunny days per year. Annual precipitation totals 53.8 inches. Air quality is rated Good with a median AQI of 48.
Temperature
49°F Jan (10°C)
65°F Jul (18°C)
| Annual Average | 57.6°F |
| 7% above US avg | |
| January Average | 49°F (10°C) |
| July Average | 65°F (18°C) |
| Sunny Days | 290 days/yr |
Geography
| Elevation | 225 ft (69 m) |
| Area | 3.0 sq mi (7.7 km²) |
| Population Density | 75/sq mi |
| Coordinates | 38.2435°N, 122.9560°W |
| Timezone | America/Los_Angeles |
| County | Marin County County |
| Nearest Airport | San Francisco International (SFO) 54 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 48.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0326 ppm |
| NO₂ (Nitrogen Dioxide) | 9.1 ppb |
| CO (Carbon Monoxide) | 0.31 ppm |
| PM2.5 (Fine Particles) | 5.4 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 96.4 / 100 |
| Social Vulnerability | 24.7 / 100 |
| Community Resilience | 99.2 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively High |
| Wildfire | Relatively Moderate |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | No Rating |
| Landslide | Relatively High |
| Coastal Flood | Very High |
| Tsunami | Relatively Moderate |
| Volcano | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
4 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 | 96 km |
| 1856 | N. CALIFORNIA | Eruption + Earthquake | 0.6 m | - | 101 km |
| 1906 | N. CALIFORNIA | Eruption + Earthquake | 0.1 m | - | 73 km |
| 1865 | N. CALIFORNIA | Eruption + Earthquake | - | - | 149 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
1 volcano within 200 km. Closest: Clear Lake (82 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Clear Lake | Volcanic field | 1,439 m (4,721 ft) | Unknown | 82 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 49°F (10°C) | 8.0 in | Wettest |
| February | 51°F (11°C) | 6.7 in | |
| March | 52°F (11°C) | 5.6 in | |
| April | 55°F (13°C) | 2.1 in | |
| May | 57°F (14°C) | 0.8 in | |
| June | 61°F (16°C) | 0.2 in | |
| July | 65°F (18°C) | 0.1 in | Warmest, Driest |
| August | 64°F (18°C) | 0.2 in | |
| September | 64°F (18°C) | 0.6 in | |
| October | 60°F (16°C) | 2.3 in | |
| November | 53°F (12°C) | 5.8 in | |
| December | 48°F (9°C) | 6.3 in | Coldest |
Dillon Beach has a seasonal temperature swing of 17°F / from 48°F in December to 65°F in July. Total annual precipitation is 38.7 inches, with January being the wettest month (8.0") and July the driest (0.1").