Key West weather

Our guide to the weather in Key West during January

22

Average high

5

UV Index

67mm

Monthly rainfall

24

Sea temperature

We've looked at the most up-to-date weather data for Key West, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Key West weather in January.

How warm is it in Key West during January?

January is typically the coolest month in Key West. The temperature reaches around 22℃ during the daytime, falling away to 20℃ at night. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.

Does it rain in Key West during January?

On average, there will be 3 rainy days during the month, amounting to 67.3mm in total. That's broadly comparable with the amount of rain we see in England during the summer months, and would be considered dry. You're not likely to see a thunderstorm during your trip.

Is it windy in Key West during January?

Expect moderate breeze becoming stronger at times during January, with occasional gusts up to 20mph. With warm air temperatures and high humidity, any breeze will feel warm but refreshing.

How warm is the sea in Key West during January?

The water temperature around Key West reaches a pleasant 24℃ during January. While generally considered warm, some people might find it a little on the cool side on entering the water.

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Key West Blog posts

From the UK's most popular travel bloggers

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Miami or Key West for Your Next Trip?

19th October 2023 by Inside the Travel Lab

Ah, it’s a tricky one, isn’t it? Miami or Key West for your next holiday. Both offer sunshine, nightlife and beaches, so it really boils down to whether you prefer the city-slicker life with world class museums and skyscrapers in Miami. Or a touch of eccentricity and Hemingway in Key West instead. But don’t sweat it. Either destination will show you a great time. Just read on to find out a little more about each place so that you can make the decision that’s right for you. ...

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Drive from Miami to Key West & 18 things to do in Key West

29th August 2022 by Phil and Garth

Driving from Miami to Key West takes you across the Florida Keys. The Keys are an archipelago of coral reef islands in the Atlantic Ocean. They stretch from the south west tip of Florida to the fabulous tropical island of Key West - which is the last island of the chain. The word ‘keys’ comes from the Spanish word ‘cayo’ meaning small island....

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Dry Tortugas National Park day trip from Key West, USA

4th June 2022 by Phil and Garth

70 miles west of Key West in the Gulf of Mexico lie a cluster of 7 small uninhabited coral and sandy islands that make up one of the most unique national parks in the world - The Dry Tortugas National Park. Famous for its remoteness, natural beauty and wildlife - birds, marine life and protected coral reefs. Plus one of the largest coastal forts ever built - Fort Jefferson. Most of the islands in the park are closed to the public to protect the wildlife like nesting turtles and birds, however...

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Enjoy a smashing holiday in South Florida: Our top picks

14th January 2021 by PommieTravels

Ready to explore this region from top to bottom? Car rental in Miami offers vehicles that will meet your group’s needs. Once you have snagged your ride, make plans to drive off to the following destinations....

Weather in Key West

Our month-by-month guide to the weather and climate in Key West

22.4

Key West weather in

January
22.8

Key West weather in

February
23.4

Key West weather in

March
25.2

Key West weather in

April
26.6

Key West weather in

May
28.4

Key West weather in

June
29.2

Key West weather in

July
29.5

Key West weather in

August
29.1

Key West weather in

September
27.6

Key West weather in

October
25.3

Key West weather in

November
23.9

Key West weather in

December