Current Weather and Forecast in Key West, FL
Florida, United States 🇺🇸
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About the weather in Key West
Key West has a tropical wet-and-dry climate. August is the warmest month, with average highs of 86°, and January the coldest, when nights fall to around 69°. September brings the most rain, on about 19 days, while July is the sunniest, with 12.2 hours of sunshine a day. Over a whole year it rains on roughly 136 days.
Key West climate guide: monthly averages, seasons and the best time to visit
Common questions
How sunny is Key West?
10.8 hours a day averaged over the year, peaking in July at 12.2 hours.
How much do temperatures drop at night in Key West?
By about 2°C on an average day - a narrower day-to-night gap than most of the 3496 cities we track. In August that means 86°F (30°C) down to 82°F (28°C).
When should I visit Key West?
December to April is the sweet spot for Key West - warm days, manageable rainfall and plenty of daylight line up. Expect 75°F (24°C) in the afternoon and around 6 days of rain in a typical month of it. For the same question asked the other way round, see where else is warm in December.
What is the rainiest month in Key West?
September, at 6.6 inches (168 mm) over about 19 days. February is the driest month, at 1.4 inches (35 mm).
When is Key West at its hottest?
August, averaging 86°F (30°C) by day and 82°F (28°C) overnight. The hottest single day in our 2015-2024 record for this location reached 89°F (32°C).
Is there snow in Key West?
Effectively no. The 2015-2024 record for Key West shows no regular measurable snowfall.
When is Key West at its coldest?
January, with highs of 73°F (23°C) and lows near 69°F (20°C). The coldest day in the 2015-2024 record fell to 54°F (12°C).
How warm is Key West on average?
78°F (26°C) across all twelve months - about 80°F (26°C) by day and 76°F (25°C) after dark.