The best time to visit Key West is during the spring (March to May) when the weather is warm, and the island is less crowded. Temperatures average in the mid-70s to low 80s Fahrenheit, offering ideal conditions for outdoor activities like snorkeling, diving, and sunset cruises. Spring is also known for its vibrant festivals, including the Conch Republic Independence Celebration.
Fall (September to November) is another great time to visit, with fewer tourists and pleasant weather. Hurricane season does extend through November, but it's rare for Key West to be directly hit. Winter (December to February) is the peak tourist season, with mild temperatures and clear skies, making it perfect for beach lovers and those looking to escape the colder northern climates. Expect higher prices and larger crowds during this time. Summer (June to August) is the hottest season, with temperatures in the 90s and high humidity, but it’s a great time for water sports, and you’ll find more affordable accommodations.