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Kailua CDP (Hawaii County), HI
Full City Profile · Hawaii · Hawaii County County
2.9
/5.0
C+
Fair
21,851
Population
1,583/sq mi density
$86,743
Median Income
$45,940 per capita
$649,400
Home Value
$987,326 Zillow
$1,747
Median Rent
26.4% income on rent
46°F
Avg Temperature
330 sunny days/yr
232
Violent Crime/100K
1,045 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
A
Economy
4.4 / 5.0
$86,743 median income, 2.5% unemployment
C
Affordability
2.4 / 5.0
$649,400 home value, $1,747/mo rent
F
Safety
1.0 / 5.0
232 violent crimes/100K
B+
Education
3.7 / 5.0
33.2% bachelor's degree or higher
Kailua CDP (Hawaii County) experiences four distinct seasons with an average annual temperature of 46°F (8°C). Winters average 43°F in January while summers reach 49°F in July. The area gets 330 sunny days per year. Annual precipitation totals 14.3 inches. Air quality is rated Good with a median AQI of 24.
Temperature
43°F Jan (6°C)
49°F Jul (10°C)
| Annual Average | 46.0°F |
| 15% below US avg | |
| January Average | 43°F (6°C) |
| July Average | 49°F (10°C) |
| Sunny Days | 330 days/yr |
Geography
| Elevation | 85 ft (26 m) |
| Area | 39.9 sq mi (103.3 km²) |
| Population Density | 1,583/sq mi |
| Coordinates | 19.6456°N, 155.9977°W |
| Timezone | Pacific/Honolulu |
| County | Hawaii County County |
| Nearest Airport | Ellison Onizuka Kona International At Keahole (KOA) 4 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 24.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| SO₂ (Sulfur Dioxide) | 1.86 ppb |
| PM2.5 (Fine Particles) | 2.6 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 98.5 / 100 |
| Social Vulnerability | 56.8 / 100 |
| Community Resilience | 56.7 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Relatively Low |
| Earthquake | Relatively High |
| Wildfire | Relatively High |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | No Rating |
| Winter Weather | Very Low |
| Lightning | Very High |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Relatively Low |
| Coastal Flood | Relatively Low |
| Tsunami | Relatively Moderate |
| Volcano | Very High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
10 tsunamis recorded within 500 km. Highest wave on record: 14.3 m (47 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1975 | HAWAII | Eruption + Earthquake | 14.3 m | 2 | 103 km |
| 1868 | HAWAII | Earthquake | 13.7 m | 77 | 89 km |
| 1869 | OFF COAST OF HAWAII | Unknown | 8.2 m | — | 112 km |
| 1919 | ALIKA, HAWAII | Explosion | 4.3 m | — | 47 km |
| 1951 | HAWAII | Earthquake | 3.6 m | — | 16 km |
| 1952 | HAWAII | Earthquake | 3.0 m | — | 121 km |
| 1908 | HAWAII | Earthquake | 1.2 m | — | 127 km |
| 2018 | HAWAII | Eruption | 0.4 m | — | 111 km |
| 1989 | HAWAII | Eruption + Earthquake | 0.3 m | — | 101 km |
| 2006 | HAWAII | Earthquake | 0.1 m | — | 27 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
5 volcanoes within 200 km. Closest: Hualalai (14 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Hualalai | Shield | 2,523 m (8,278 ft) | 1801 | 14 km |
| Mauna Loa | Shield | 4,170 m (13,681 ft) | 1984 | 45 km |
| Mauna Kea | Shield | 4,205 m (13,796 ft) | -2460 | 59 km |
| Kilauea | Shield | 1,222 m (4,009 ft) | 2018 | 79 km |
| Haleakala | Shield | 3,055 m (10,023 ft) | 1750 | 121 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 43°F (6°C) | 5.3 in | Coldest |
| February | 63°F (17°C) | 5.5 in | |
| March | 64°F (18°C) | 7.4 in | |
| April | 65°F (18°C) | 8.6 in | |
| May | 66°F (19°C) | 9.9 in | Wettest |
| June | 67°F (19°C) | 5.6 in | |
| July | 49°F (10°C) | 5.8 in | |
| August | 69°F (20°C) | 5.6 in | Warmest |
| September | 69°F (20°C) | 5.4 in | |
| October | 68°F (20°C) | 4.9 in | |
| November | 67°F (19°C) | 6.4 in | |
| December | 64°F (18°C) | 4.4 in | Driest |
Kailua CDP (Hawaii County) has a seasonal temperature swing of 26°F / from 43°F in January to 69°F in August. Total annual precipitation is 74.8 inches, with May being the wettest month (9.9") and December the driest (4.4").