Key Biscayne, Florida — City Overview

Living in Key Biscayne, summers are hot, with Aug highs around 88.0°F, while winters stay mild, with Jan lows rarely below 62.7°F. At just 0 heating degree days per year, home heating costs are minimal. Annual rainfall reaches 63.3 inches, mostly summer thunderstorms. Within 5 miles: 17 parks, 2 groceries, 30 dining spots and 6 schools. For hospital care, the nearest facility is in a neighboring city. Median household income: $173,015. With a 8.4% poverty rate and 64.9% homeownership, the community reflects a stable residential mix. Air quality is Moderate — avg AQI 52 over the past week.

View Key Biscayne city guide

Updated July 08, 2026.

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