Quick verdict
Peak season: Jan–Apr, Dec. Shoulder: May, Nov. Low: Jun–Oct.
Key West has a tropical savanna climate moderated by surrounding water — temperatures stay narrowly between 18°C (winter low) and 32°C (summer high) all year.
What's the weather like in Key West by month?
Each month classified as peak (best balance of weather and value), shoulder (a step in either direction), or low season.
Why visit Key West during Jan–Apr, Dec?
Peak tourist season — perfect weather, low humidity, no rain, packed Duval Street, and the highest hotel prices of the year. Snowbirds from the northern US and Canada fill the island.
Shoulder season (May, Nov) trades a small weather concession for noticeably smaller crowds and softer prices — often the sweet spot for travelers who want flexibility.
Low season (Jun–Oct) is when prices fall hardest. Expect weather extremes (heat, humidity, cold, or rain depending on the destination) and reduced hours at some seasonal businesses, but the trade-off can be worth it if budget or solitude matters more than perfect conditions.
What festivals and events happen in Key West?
- Fantasy FestLate October
A 10-day adults-only Mardi Gras-style street festival with body-painted parades, drag pageants, masquerade balls, and the Goombay Festival in Bahama Village. Family travellers should avoid these dates; party travellers should book 6 months ahead.
- Conch Republic Independence CelebrationLate April
A week-long beloved local festival commemorating the 1982 secession, featuring a "Great Battle" naval skirmish in the harbor, parades, drag races, and the Pridefest week. Quirky, locally beloved, and a great window into Key West culture.
- Hemingway DaysMid-July
A week celebrating Ernest Hemingway with a look-alike contest at Sloppy Joe's (typically 100+ bearded white-haired men competing), short-story competition, marlin tournament, and 5K run. Hot but distinctive.
- Goombay FestivalOctober (during Fantasy Fest)
A celebration of Bahama Village's Bahamian heritage — junkanoo parades, conch fritters, Bahamian music, and crafts; the most authentic cultural event of the Key West calendar.
Cooler & warmer in North America this December
If Key West's December weather isn't your match, here are the closest North America alternatives at different temperatures. Distances are from Key West.
Cooler
See the full ranked list: All North America destinations in December →
Frequently asked
When is the best time to visit Key West?
The best time to visit Key West is Jan–Apr, Dec. Key West has a tropical savanna climate moderated by surrounding water — temperatures stay narrowly between 18°C (winter low) and 32°C (summer high) all year. These months balance comfortable weather, manageable crowds, and prices that haven't yet hit peak-season highs.
When is the cheapest time to visit Key West?
Low-season months in Key West run Jun–Oct. Flights and hotels typically run 20-40% cheaper than peak. The trade-off is weather (which is why these months are off-peak) and some businesses operating shorter hours, especially in smaller seasonal destinations.
What's the weather like in Key West year-round?
Summer averages around 29°C (84°F) and winter averages around 22°C (72°F) in Key West. Key West has a tropical savanna climate moderated by surrounding water — temperatures stay narrowly between 18°C (winter low) and 32°C (summer high) all year. There is a wet season (May–October, with afternoon thunderstorms and hurricane risk) and a dry season (November–April, which is also peak tourist season). Hurricane risk is real — Hurricane Irma in 2017 caused major damage to the Lower Keys.
What festivals or events are happening in Key West?
Notable events in Key West: Fantasy Fest (Late October); Conch Republic Independence Celebration (Late April); Hemingway Days (Mid-July). A 10-day adults-only Mardi Gras-style street festival with body-painted parades, drag pageants, masquerade balls, and the Goombay Festival in Bahama Village. Family travellers should avoid these dates; party travellers should book 6 months ahead.
How many days do I need in Key West?
Most travelers spend 3-5 days in Key West, which covers the main neighborhoods, top attractions, and a half-day day trip. Add a day if you're visiting during peak season when crowds slow you down, or if you're combining Key West with nearby destinations.
More peak-season picks for Key West's best months
See every destination at its peak in each of Key West's best months.
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