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.
Key West climatological average
Annual average temperature: approx. 82.4°F / Annual rainfall: approx. 935 mm / Summer humidity: 70%–80% / Rainiest month: June
Key West monthly average temperature and precipitation
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
Key West weather for the next seven days
4/21
Tuesday
Patchy rain nearby
79.9°F/74.1°F
4/22
Wednesday
Cloudy
75.7°F/74.6°F
4/23
Thursday
Patchy rain nearby
75.6°F/74.7°F
4/24
Friday
Patchy rain nearby
76.7°F/75.2°F
4/25
Saturday
Sunny
77.6°F/76.1°F
4/26
Sunday
Sunny
78°F/76.6°F
4/27
Monday
Sunny
78.6°F/77.7°F
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