Is it warm enough to swim in Key West?

The water temperature in Florida Keys does not fall below 68?F throughout those months, making swimming enjoyable. In the Florida Keys, the water is an average temperature of 75.4?F in the winter, 78.6?F in the spring, 85.6?F in the summer, and 82.8?F in the fall.



Yes, it is generally warm enough to swim in Key West year-round, although your comfort level in February 2026 will depend on your personal tolerance. Key West enjoys a tropical climate where water temperatures rarely dip below 70°F to 74°F (21°C to 23°C), even in the depths of winter. The air temperature in February typically sees highs around 75°F to 78°F, making for a pleasant beach day. While "locals" might find the winter water a bit brisk, travelers from cooler northern climates often find it perfectly refreshing for swimming, snorkeling, or paddleboarding. The nearby Gulf Stream acts as a natural heater, maintaining a consistent warmth that is unique to the Florida Keys. If you are sensitive to the cold, you might consider a thin "shorty" wetsuit for extended snorkeling sessions at the coral reef, but for a quick splash in the ocean at Smathers Beach or Fort Zachary Taylor, the water is inviting in any season.

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Usually just a couple of degrees warmer in Key West, but the beaches there are not as nice as the ones in Miami so I'd choose Miami if you want to sunbathe in that warm weather- most Key West beaches are small, rocky and often filled with smelly seaweed because of their position in relation to the reef.

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The Florida Keys have a year-round swimming season from January to December. The water temperature in the Florida Keys does not fall below 68°F throughout those months, making swimming enjoyable.

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The crime rate in the Florida Keys is low, but you should still use common sense when exploring Key West, especially at night and around hectic Duval Street and Mallory Square. Exercise caution when going into the water as well; be sure to heed all flags and warnings from authorities.

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It is true that Key West can be an expensive destination, but there are still many ways to enjoy the island on a budget by taking advantage of off-season rates, staying in budget-friendly accommodations, and seeking out free or low-cost activities.

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Visit Key West in the off-season The fall (September–November) is the low season in Key West, and room rates can drop by 50 percent or more. The hot, storm-prone summer months also see lower prices, and you'll find decent discounts in April and May after the winter crowds thin out.

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One of the best beaches in Key West is located inside Fort Zachary Taylor Park, the southernmost state park in the country. The beach boasts crystal clear waters and is perfect for families looking for a unique place to cool off.

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The City of Key West has many local beaches, each with their own distinctive fit and feel. The public sands along the water surrounding the 2 by 4 mile island may be modest in size, but that makes them no less popular with locals and visitors alike.

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The 'coldest' month is January, but daytime highs still average a warm 75°F (24°C) — although to Floridians, this might feel cold!

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Know the Facts. In Key West, there has never been a fatal shark attack, and there's only been one incident reported in the record books since the 1800s. For those who like statistics, you're 45,000 times more likely to die from a car accident than from a shark attack.

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