Key Biscayne, FL Weather

Key Biscayne, FL climate is hot during summer when temperatures tend to be in the 80's and mild during winter when temperatures tend to be in the 60's.

The warmest month of the year is August with an average maximum temperature of 9.99 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 9.99 degrees Fahrenheit.

Temperature variations between night and day tend to be small during summer with a difference that can reach 9 degrees Fahrenheit, and fairly limited during winter with an average difference of 11 degrees Fahrenheit.

The annual average precipitation at Key Biscayne is 9.99 Inches. Summer months tend to be wetter than winter months. The wettest month of the year is June with an average rainfall of 6.90 Inches.

Weather Data

Normal Climate

Normal Temperatures

(MIAMI BEACH Weather station, 6.33 miles from Key Biscayne)

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Max °F	73.2	73.4	75.3	78.5	82.1	85.5	87.0	87.2	85.9	82.5	78.4	74.8	80.3
Mean °F	67.9	68.2	70.9	74.2	78.0	81.1	82.7	82.8	81.8	78.5	74.3	69.9	75.9
Min °F	62.6	63.0	66.4	69.8	73.8	76.7	78.3	78.3	77.6	74.5	70.1	65.0	71.3

Normal Precipitation