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Port St. John, FL
Full City Profile · Florida · Brevard County County
3.3
/5.0
B
Good
24,617
Population
2,641/sq mi density
$84,214
Median Income
$39,125 per capita
$262,700
Home Value
$267,549 Zillow
$1,679
Median Rent
27.5% income on rent
73°F
Avg Temperature
314 sunny days/yr
603
Violent Crime/100K
3,266 property/100K
B
Overall
3.3 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.4 / 5.0
$84,214 median income, 3.1% unemployment
A+
Affordability
4.9 / 5.0
$262,700 home value, $1,679/mo rent
F
Safety
1.0 / 5.0
603 violent crimes/100K (59% above avg)
C+
Education
2.7 / 5.0
21.3% bachelor's degree or higher
Port St. John has a warm climate with an average annual temperature of 73°F (23°C). Winters average 61°F in January while summers reach 82°F in July. The area gets 314 sunny days per year. Annual precipitation totals 55.3 inches. The area receives 0.0 inches of snow annually. Air quality is rated Good with a median AQI of 41.
Temperature
61°F Jan (16°C)
82°F Jul (28°C)
| Annual Average | 72.9°F |
| 35% above US avg | |
| January Average | 61°F (16°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 314 days/yr |
Geography
| Elevation | 31 ft (9 m) |
| Area | 9.3 sq mi (24.1 km²) |
| Population Density | 2,641/sq mi |
| Coordinates | 28.4757°N, 80.8104°W |
| Timezone | America/New_York |
| County | Brevard County County |
| Nearest Airport | Space Coast Regional (TIX) 3 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0416 ppm |
| PM2.5 (Fine Particles) | 6.3 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 98.4 / 100 |
| Social Vulnerability | 40.8 / 100 |
| Community Resilience | 63.4 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very High |
| Earthquake | Very Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively High |
| Hail | Relatively Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | No Rating |
| Lightning | Very High |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
| Coastal Flood | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 61°F (16°C) | 2.5 in | Coldest |
| February | 62°F (17°C) | 3.0 in | |
| March | 67°F (19°C) | 3.4 in | |
| April | 71°F (21°C) | 1.8 in | Driest |
| May | 76°F (24°C) | 3.3 in | |
| June | 80°F (27°C) | 6.3 in | |
| July | 82°F (28°C) | 6.0 in | Warmest |
| August | 81°F (27°C) | 6.2 in | |
| September | 80°F (27°C) | 7.1 in | Wettest |
| October | 75°F (24°C) | 4.4 in | |
| November | 68°F (20°C) | 2.8 in | |
| December | 63°F (17°C) | 1.9 in |
Port St. John has a seasonal temperature swing of 21°F / from 61°F in January to 82°F in July. Total annual precipitation is 48.6 inches, with September being the wettest month (7.1") and April the driest (1.8").