Best time to visit Key Biscayne, FL

A month-by-month travel weather guide based on NOAA 30-year climate normals.

The most comfortable travel window in Key Biscayne runs from November through April — 6 months of pleasant temperatures and modest rainfall.

January Excellent
High
77.5°F
Low
62.8°F
Precip
2.44 in

Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.

Daylight ≈ 10h 34m

February Excellent
High
78.9°F
Low
64.8°F
Precip
2.00 in

Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.

Daylight ≈ 11h 8m

March Good
High
80.9°F
Low
67.1°F
Precip
2.37 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 11h 51m

April Good
High
83.8°F
Low
71.5°F
Precip
3.17 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 12h 37m

May Wet
High
86.5°F
Low
74.9°F
Precip
5.67 in

Frequent rain. Bring waterproof gear; outdoor plans need flexibility.

Daylight ≈ 13h 15m

June Wet
High
89.6°F
Low
78.0°F
Precip
7.37 in

Frequent rain. Bring waterproof gear; outdoor plans need flexibility.

Daylight ≈ 13h 35m

July Wet
High
90.8°F
Low
79.0°F
Precip
5.64 in

Frequent rain. Bring waterproof gear; outdoor plans need flexibility.

Daylight ≈ 13h 27m

August Wet
High
91.4°F
Low
79.4°F
Precip
7.05 in

Frequent rain. Bring waterproof gear; outdoor plans need flexibility.

Daylight ≈ 12h 54m

September Wet
High
90.3°F
Low
78.7°F
Precip
7.54 in

Frequent rain. Bring waterproof gear; outdoor plans need flexibility.

Daylight ≈ 12h 9m

October Wet
High
87.2°F
Low
76.1°F
Precip
6.33 in

Frequent rain. Bring waterproof gear; outdoor plans need flexibility.

Daylight ≈ 11h 23m

November Good
High
82.7°F
Low
70.7°F
Precip
3.51 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 10h 43m

December Excellent
High
79.7°F
Low
66.0°F
Precip
2.24 in

Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.

Daylight ≈ 10h 24m

Looking for similar climates? See Key Biscayne's climate twins. Or jump straight to the full climate profile.