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Key West Weather

Key West Weather

SPOILER ALERT: The weather in Key West is awesome. Warmed by sun and sea, cooled by wind and rain, Key West weather is always great. Let Cool Key West help you plan a frost-free vacation in tropical Key West.

The Florida Keys form a barrier that divides the Gulf of Mexico from the Atlantic Ocean, with the waters of the two merging in the Straits of Florida between Key West and Cuba. The uniformly great Key West weather arises from this location between the two differing bodies of water, as well as from the island’s tropical latitude. The Gulf is much warmer and calmer than the Atlantic, and has a major current that drives heated water along both sides of the Keys.

The Gulf Loop Current is a primary factor in Key West weather. The Loop is born of water pushed by the Earth’s rotation from the Atlantic onto the coast line of Central America and up into the western Gulf, where it runs up the coast of Mexico, across the Southern seaboard of the U.S., and down the western Florida shoreline. The moving water picks up heat along the way, and as it exits the Gulf running east through the Straits of Florida, it is very warm. With surface temperatures averaging 75 to 77°F from December through February, it is the warmest ocean water on the United States mainland.This warm water keeps the Key West weather very mild and stable, with only about a 15°F variation in mean monthly temperatures throughout the year.

The Keys are the only U.S. mainland location where frost or freezing temperatures have never been recorded. The lowest temperature recorded in Key West was 41°F on January 12, 1886, and again on January 13, 1981. Summer temperatures are moderate as well, mellowed by easterly trade winds and local sea breezes drawn off the cool waters of the Atlantic. While Key West weather in the summer may certainly feel hot, the record high summer temperature mark is only 97°F.

Although it might be imagined that a tropical location like Key West is rainy, the island actually has a tropical savannah climate similar to the Caribbean islands rather than a rainforest or monsoon climate. The island has a pronounced dry season and gets only 39 inches of rain per year, a little more than the U.S. average of 37 inches and much less than the 50 to 60 inch average common to the rest of Florida.

The weather in Key West is characterized mainly by the wet and dry seasons. In the months of November through April, the island receives many of its average 260 sunny days per year and about 25 percent of the annual rainfall, usually in advance of cold fronts that move in from the northeast in waves. The wet season runs from May through October, with numerous showers and thunderstorms bringing in about 53 percent of the yearly precipitation, often as early morning rains that are followed by intensely hot afternoon sun.

Unlike mainland Florida and the Gulf Coast, Key West is not often the direct target of hurricanes. The average time between direct hits is 5.88 years, with a 21 year gap between hits occurring from 1966-1987. However, when close brushes are factored in, the island receives some storm effects every 2.71 years. Most tropical storms tracking through the Gulf tend to move north of the Keys, but the island can be affected by the wind and rainfall of storm systems that are hundreds of miles away. Due to the low-lying nature of the Keys, they are vulnerable to the storm surges and rain-fall induced flooding common to tropical storms.

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  • Key West Dry Tortugas National Park Ferry

    Cruise 70 miles of open water in spacious comfort to Fort Jefferson in the Dry Tortugas National Park aboard the Yankee Freedom III Dry Tortugas Ferry.

    Duration: 9.5 Hours (approx.) Activity Level: Moderate
    Best Rate
    180
    Details
    Best Rate
    180
    Details
  • Key West Snuba® (No Dive Certification Required)

    If you want to go beyond snorkeling and experience the world's underwater beauty in the safest and easiest way possible, try Snuba®!

    Duration: 3 Hours (approx.) Activity Level: Moderate
    Best Rate
    109
    Details
    Best Rate
    109
    Details
  • Top10

    Key West Dolphin Watch & Snorkel

    Board the Dolphin Watch & Snorkel Cruise Key West for a journey to observe the beauty of Key West dolphins.

    Duration: 4 Hours (approx.) Activity Level: Moderate
    Best Rate
    89
    Details
    Best Rate
    89
    Details
  • Top10

    Key West Backcountry Safari

    Spend an unforgettable day sailing emerald waters, kayaking mangrove-shaded channels and snorkeling coral gardens in an unspoiled marine wilderness.

    Duration: 6.5 Hours (approx.) Activity Level: Moderate
    Best Rate
    120
    Details
    Best Rate
    120
    Details
  • Top10

    Key West Sail, Snorkel, Kayak with Sunset Option

    Enjoy an unforgettable morning or afternoon of sailing, kayaking and snorkeling in the pristine marine wilderness of the Key West National Wildlife Refuge.

    Duration: 4.5 Hours (approx.) Activity Level: Moderate
    Best Rate
    80
    Details
    Best Rate
    80
    Details
  • Key West Dolphin Snorkel Safari

    Indulge your senses as you pass over natural sands through the blue waters of Key West into the playgrounds of wild dolphins on Dolphin Snorkel Sea Safari.

    Duration: 3 Hours (approx.) Activity Level: Moderate
    Best Rate
    99
    Details
    Best Rate
    99
    Details
  • Top10

    Miami to Key West Day Trip with Snorkeling

    Take a luxury coach tour from Miami to Key West, where you will enjoy a snorkeling trip on North America's only living coral reef.

    Duration: 6 Hours in Key West Activity Level: Moderate
    $125
    99
    Details
    $125
    99
    Details
  • Key West Conch Tour Train

    See the Best of Key West on the tour that's been entertaining visitors to the Island City since 1958.

    Duration: 90 minutes Activity Level: Easy
    Best Rate
    31.45
    Details
    Best Rate
    31.45
    Details
  • Key West Old Town Trolley

    Sit back while the expert tour guides turn back the pages of history to the days of Indians, pirates, wreckers and the Civil War.

    Duration: 1.5 hour tour. Hop on, hop off all day. Activity Level: Easy
    Best Rate
    38.80
    Details
    Best Rate
    38.80
    Details
  • Key West Morning 2-Tank SCUBA Dive

    The morning two tank Key West Dive Trips are great because this includes a double dive in a Vandenberg wreck dive.

    Duration: 4.5 Hours Activity Level: Difficult
    Best Rate
    89
    Details
    Best Rate
    89
    Details
  • Top10

    Key West Dive in a Day Scuba Resort Course

    The Dive in a Day Scuba Resort Course is the absolute best way for a person to experience diving. Great for those who want to try scuba diving in Key West.

    Duration: 9 Hours Activity Level: Moderate
    $250
    185
    Details
    $250
    185
    Details
  • Top10

    Key West Deep Sea Fishing Charter

    Experience the thrill of Key West deep sea fishing to the fullest on a hunt for trophy game fish in the open sea with your own private boat, captain, and crew

    Duration: 4, 6 or 8 Hours Activity Level: Easy
    $900
    800
    Details
    $900
    800
    Details
  • Key West Flats Fishing Charter

    Take your own private boat and personal guide to hunt Bonefish, Permit, Sharks and other game fish in the crystal-clear waters of the Key West Backcountry.

    Duration: 4, 6 or 8 Hours Activity Level: Moderate
    Best Rate
    550
    Details
    Best Rate
    550
    Details
  • Top10

    Key West Original Island Jet Ski Tour

    On our Key West Island Jet Ski Tours you jump on one of our Yamaha Waverunners and cruise around the island on a 28 mile, 90 mins guided jet ski tour.

    Duration: 90 Minutes Activity Level: Moderate
    $150
    129
    Details
    $150
    129
    Details
Call (855) 274-1023 to speak with a Destination Specialist