Monthly Historical AveragesKey Biscayne Beach, FL
Average Temperature
High
28°
Feels 31
Low
24°
Feels 25
Average Precipitation
16 Days
128.1mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastSaturday, May 9, 2026
Day
29°Feels 34
Wind
22 km/h S
Gust
33 km/h
Humidity
74%
P.O.P
30%
Night
27°Feels 30
Wind
21 km/h S
Gust
31 km/h
Humidity
79%
P.O.P
40%
Rain
<1 mm
Historical AveragesMay 9
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity