Spring (March–May): Average 78–84°F, warm and comfortable climate, abundant sunshine, occasional showers. Common activities: Beach activities, water sports, dolphin watching. Suggested clothing: Light short-sleeved clothing, shorts, sandals; a light jacket may be needed in the evening.
Summer (June–August): Average 86–89°F, hot and humid, frequent rainfall, especially in June. Common activities: Swimming, sunbathing, watching the sunset in the evening. Suggested clothing: Light and breathable clothing, swimwear, hat, sunscreen.
Autumn (September–November): Average 83–87°F, still warm but slightly cooler than summer, more rainfall. Common activities: Fishing, boating, exploring local attractions. Suggested clothing: Light long-sleeved or short-sleeved clothing, a jacket as needed.
Winter (December–February): Average 74–76°F, mild and comfortable, moderate rainfall. Common activities: Sightseeing, visiting historical sites, enjoying beach leisure activities. Suggested clothing: Light long-sleeved clothing, long pants, a light jacket may be needed.
Weather in Key West
Annual average temperature: approx. 82.4°F / Annual rainfall: approx. 935 mm / Summer humidity: 70%–80% / Rainiest month: June
Key West weather by month
Month
Air temperature (°F)
Precipitation (mm)
January
74.5°F
18.8
February
75°F
36
March
78.4°F
26
April
79°F
46.2
May
84.2°F
33.3
June
86.4°F
179.1
July
89.4°F
61.5
August
88.9°F
110.8
September
87.6°F
164.3
October
83.1°F
102.9
November
81°F
43.5
December
76.5°F
112.7
7-day weather forecast for Key West
10/27
Tuesday
Patchy rain nearby
80.9°F/77.2°F
10/28
Wednesday
Patchy rain nearby
80.6°F/76.9°F
10/29
Thursday
Sunny
80.6°F/79.2°F
10/30
Friday
Patchy rain nearby
80.5°F/79.5°F
10/31
Saturday
Sunny
81°F/78.8°F
11/1
Sunday
Patchy rain nearby
80.9°F/78.9°F
11/2
Monday
Patchy rain nearby
79.8°F/78.9°F
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