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Castine, ME
Full City Profile · Maine · Hancock County County
3.8
/5.0
B+
Good
926
Population
601/sq mi density
$143,229
Median Income
$32,183 per capita
$658,200
Home Value
$303,688 Zillow
44°F
Avg Temperature
251 sunny days/yr
38
Violent Crime/100K
1,485 property/100K
B+
Overall
3.8 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
5.0 / 5.0
$143,229 median income, 1.1% unemployment
A
Affordability
4.1 / 5.0
$658,200 home value, /mo rent
F
Safety
1.0 / 5.0
38 violent crimes/100K
A+
Education
5.0 / 5.0
86.2% bachelor's degree or higher
Castine has a cool climate with an average annual temperature of 44°F (7°C). Winters average 20°F in January while summers reach 67°F in July. The area gets 251 sunny days per year. Annual precipitation totals 48.8 inches. The area receives 71.5 inches of snow annually. Air quality is rated Good with a median AQI of 34.
Temperature
20°F Jan (-7°C)
67°F Jul (19°C)
| Annual Average | 44.1°F |
| 18% below US avg | |
| January Average | 20°F (-7°C) |
| July Average | 67°F (19°C) |
| Sunny Days | 251 days/yr |
Geography
| Elevation | 64 ft (20 m) |
| Area | 1.6 sq mi (4.0 km²) |
| Population Density | 601/sq mi |
| Coordinates | 44.3940°N, 68.8060°W |
| Timezone | America/New_York |
| County | Hancock County County |
| Nearest Airport | Knox County Regional (RKD) 27 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 34.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0412 ppm |
| SO₂ (Sulfur Dioxide) | 0.06 ppb |
| CO (Carbon Monoxide) | 0.17 ppm |
| PM2.5 (Fine Particles) | 4.2 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 55.0 / 100 |
| Social Vulnerability | 30.2 / 100 |
| Community Resilience | 97.5 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Relatively Moderate |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively High |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively High |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
| Coastal Flood | Relatively Moderate |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 3.6 m (12 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 2008 | MAINE | Avalanche | 3.6 m | — | 97 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 20°F (-7°C) | 3.9 in | Coldest |
| February | 23°F (-5°C) | 3.4 in | |
| March | 32°F (-0°C) | 3.9 in | |
| April | 42°F (6°C) | 4.3 in | |
| May | 53°F (12°C) | 4.1 in | |
| June | 62°F (16°C) | 3.7 in | |
| July | 67°F (19°C) | 3.2 in | Warmest |
| August | 66°F (19°C) | 3.1 in | Driest |
| September | 58°F (15°C) | 3.8 in | |
| October | 48°F (9°C) | 4.3 in | |
| November | 38°F (4°C) | 5.3 in | Wettest |
| December | 27°F (-3°C) | 4.8 in |
Castine has a seasonal temperature swing of 47°F / from 20°F in January to 67°F in July. Total annual precipitation is 47.9 inches, with November being the wettest month (5.3") and August the driest (3.1").