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Key Biscayne, FL vs Miami, FL weather comparison

Key Biscayne

FL

Key Biscayne endures about 30 more days above 90 °F each year.

Miami sees rain or snow on roughly 29 fewer days each year.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Key Biscayne, FL and Miami, FL
Key BiscayneMetricMiami
227 daysSunny daysclear or partly cloudy skies227 days
41 inPrecipitationper year60 in
151 daysWet daysrain or snow per year122 days
0 inSnowfallper year0 in
77 daysHot daysabove 90 °F47 days
0 daysFreezing nightsat or below 32 °F0 days
75%Humidityaverage relative75%
79 °FAverage temperatureyear round77 °F

Monthly temperatures

Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.

Key BiscayneMiami

Daily highs

75808590JanMarMayJulSepNovKey Biscayne, Jan: 77 °FKey Biscayne, Feb: 79 °FKey Biscayne, Mar: 81 °FKey Biscayne, Apr: 84 °FKey Biscayne, May: 86 °FKey Biscayne, Jun: 89 °FKey Biscayne, Jul: 91 °FKey Biscayne, Aug: 91 °FKey Biscayne, Sep: 90 °FKey Biscayne, Oct: 87 °FKey Biscayne, Nov: 83 °FKey Biscayne, Dec: 80 °FMiami, Jan: 74 °FMiami, Feb: 76 °FMiami, Mar: 78 °FMiami, Apr: 81 °FMiami, May: 84 °FMiami, Jun: 87 °FMiami, Jul: 89 °FMiami, Aug: 89 °FMiami, Sep: 88 °FMiami, Oct: 85 °FMiami, Nov: 80 °FMiami, Dec: 77 °F

Daily lows

607080JanMarMayJulSepNovKey Biscayne, Jan: 63 °FKey Biscayne, Feb: 65 °FKey Biscayne, Mar: 67 °FKey Biscayne, Apr: 71 °FKey Biscayne, May: 75 °FKey Biscayne, Jun: 78 °FKey Biscayne, Jul: 79 °FKey Biscayne, Aug: 79 °FKey Biscayne, Sep: 79 °FKey Biscayne, Oct: 76 °FKey Biscayne, Nov: 71 °FKey Biscayne, Dec: 66 °FMiami, Jan: 61 °FMiami, Feb: 64 °FMiami, Mar: 66 °FMiami, Apr: 70 °FMiami, May: 74 °FMiami, Jun: 76 °FMiami, Jul: 78 °FMiami, Aug: 78 °FMiami, Sep: 77 °FMiami, Oct: 74 °FMiami, Nov: 69 °FMiami, Dec: 65 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Key Biscayne high777981848689919190878380
Miami high747678818487898988858077
Key Biscayne low636567717578797979767166
Miami low616466707476787877746965

Monthly precipitation

Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.

Key BiscayneMiami
0.02.55.07.5JanMarMayJulSepNovKey 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 inMiami, Jan: 2.6 inMiami, Feb: 2.1 inMiami, Mar: 2.6 inMiami, Apr: 3.0 inMiami, May: 5.3 inMiami, Jun: 8.9 inMiami, Jul: 6.4 inMiami, Aug: 8.3 inMiami, Sep: 9.0 inMiami, Oct: 6.6 inMiami, Nov: 3.1 inMiami, Dec: 2.2 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
Miami2.62.12.63.05.38.96.48.39.06.63.12.2

Monthly sunny days

Days each month with clear or partly cloudy skies, so compare the same month between cities.

Key BiscayneMiami
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 daysMiami, Jan: 21 daysMiami, Feb: 21 daysMiami, Mar: 23 daysMiami, Apr: 23 daysMiami, May: 23 daysMiami, Jun: 13 daysMiami, Jul: 15 daysMiami, Aug: 14 daysMiami, Sep: 13 daysMiami, Oct: 19 daysMiami, Nov: 21 daysMiami, Dec: 21 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Key Biscayne212123232313151413192121
Miami212123232313151413192121

Keep comparing

Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.

Key Biscayne vs another city

See the full Key Biscayne, FL climate profile

More Florida cities

Miami vs another city

See the full Miami, FL climate profile

More Florida cities

About this data

Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. 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).