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Grover Beach, CA
Full City Profile · California · San Luis Obispo County County
2.6
/5.0
C+
Fair
12,687
Population
5,492/sq mi density
$82,534
Median Income
$41,607 per capita
$691,900
Home Value
$759,548 Zillow
$1,921
Median Rent
29.9% income on rent
59°F
Avg Temperature
330 sunny days/yr
96
Violent Crime/100K
1,761 property/100K
C+
Overall
2.6 / 5.0
Fair overall score based on economy, affordability, safety and education
A
Economy
4.4 / 5.0
$82,534 median income, 2.2% unemployment
D
Affordability
1.9 / 5.0
$691,900 home value, $1,921/mo rent
F
Safety
1.0 / 5.0
96 violent crimes/100K
B
Education
3.2 / 5.0
26.9% bachelor's degree or higher
Grover Beach enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 55°F in January while summers reach 62°F in July. The area gets 330 sunny days per year. Annual precipitation totals 17.9 inches. The area receives 0.0 inches of snow annually. Air quality is rated Good with a median AQI of 48.
Temperature
55°F Jan (13°C)
62°F Jul (17°C)
| Annual Average | 59.1°F |
| 9% above US avg | |
| January Average | 55°F (13°C) |
| July Average | 62°F (17°C) |
| Sunny Days | 330 days/yr |
Geography
| Elevation | 64 ft (20 m) |
| Area | 2.3 sq mi (6.0 km²) |
| Population Density | 5,492/sq mi |
| Coordinates | 35.1209°N, 120.6197°W |
| Timezone | America/Los_Angeles |
| County | San Luis Obispo County County |
| Nearest Airport | San Luis Obispo County Regional (SBP) 6 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 48.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0404 ppm |
| NO₂ (Nitrogen Dioxide) | 5.1 ppb |
| SO₂ (Sulfur Dioxide) | 0.39 ppb |
| PM2.5 (Fine Particles) | 4.9 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 95.9 / 100 |
| Social Vulnerability | 32.8 / 100 |
| Community Resilience | 93.9 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively High |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Relatively Low |
| Drought | Very High |
| Cold Wave | No Rating |
| Landslide | Relatively High |
| Coastal Flood | Relatively Low |
| Tsunami | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
4 tsunamis recorded within 500 km. Highest wave on record: 3.4 m (11 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1812 | S. CALIFORNIA | Eruption + Earthquake | 3.4 m | 1 | 122 km |
| 1927 | S. CALIFORNIA | Earthquake | 1.8 m | — | 37 km |
| 1878 | S. CALIFORNIA | Meteorological | 1.0 m | 1 | 12 km |
| 1901 | MONTEREY BAY, N. CALIFORNIA | Eruption + Earthquake | — | — | 98 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 55°F (13°C) | 4.3 in | Wettest |
| February | 54°F (12°C) | 4.3 in | |
| March | 55°F (13°C) | 3.8 in | |
| April | 57°F (14°C) | 1.3 in | |
| May | 59°F (15°C) | 0.4 in | |
| June | 62°F (16°C) | 0.1 in | |
| July | 62°F (17°C) | 0.0 in | Driest |
| August | 64°F (18°C) | 0.1 in | Warmest |
| September | 64°F (18°C) | 0.4 in | |
| October | 62°F (16°C) | 0.8 in | |
| November | 57°F (14°C) | 2.1 in | |
| December | 52°F (11°C) | 3.1 in | Coldest |
Grover Beach has a seasonal temperature swing of 12°F / from 52°F in December to 64°F in August. Total annual precipitation is 20.6 inches, with January being the wettest month (4.3") and July the driest (0.0").