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Key Biscayne, FL weather and climate

Miami-Dade County, FL · population 14,560 · about 10 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at Key Biscayne's own coordinates.

The year at a glance

Sunny days
227
clear or partly cloudy, per year
Precipitation
41 in
per year
Wet days
151
rain or snow per year
Snowfall
0 in
per year
Hot days
77
above 90 °F
Freezing nights
0
at or below 32 °F
Humidity
75%
average relative
Average temperature
79 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
708090JanMarMayJulSepNovDaily high, Jan: 77 °FDaily high, Feb: 79 °FDaily high, Mar: 81 °FDaily high, Apr: 84 °FDaily high, May: 86 °FDaily high, Jun: 89 °FDaily high, Jul: 91 °FDaily high, Aug: 91 °FDaily high, Sep: 90 °FDaily high, Oct: 87 °FDaily high, Nov: 83 °FDaily high, Dec: 80 °FDaily low, Jan: 63 °FDaily low, Feb: 65 °FDaily low, Mar: 67 °FDaily low, Apr: 71 °FDaily low, May: 75 °FDaily low, Jun: 78 °FDaily low, Jul: 79 °FDaily low, Aug: 79 °FDaily low, Sep: 79 °FDaily low, Oct: 76 °FDaily low, Nov: 71 °FDaily low, Dec: 66 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high777981848689919190878380
Daily low636567717578797979767166

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.02.04.06.0JanMarMayJulSepNovKey Biscayne, Jan: 1.8 inKey Biscayne, Feb: 1.5 inKey Biscayne, Mar: 1.8 inKey Biscayne, Apr: 2.1 inKey Biscayne, May: 3.6 inKey Biscayne, Jun: 6.1 inKey Biscayne, Jul: 4.4 inKey Biscayne, Aug: 5.7 inKey Biscayne, Sep: 6.2 inKey Biscayne, Oct: 4.5 inKey Biscayne, Nov: 2.1 inKey Biscayne, Dec: 1.5 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Key Biscayne1.81.51.82.13.66.14.45.76.24.52.11.5

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovKey Biscayne, Jan: 21 daysKey Biscayne, Feb: 21 daysKey Biscayne, Mar: 23 daysKey Biscayne, Apr: 23 daysKey Biscayne, May: 23 daysKey Biscayne, Jun: 13 daysKey Biscayne, Jul: 15 daysKey Biscayne, Aug: 14 daysKey Biscayne, Sep: 13 daysKey Biscayne, Oct: 19 daysKey Biscayne, Nov: 21 daysKey Biscayne, Dec: 21 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Key Biscayne212123232313151413192121

Compare Key Biscayne with another city

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About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).