Visitors to this southernmost point of the continental United States in October can typically expect daily high temperatures averaging in the low 80s Fahrenheit (high 20s Celsius) and lows in the mid-70s Fahrenheit (low 20s Celsius). Ocean temperatures remain warm, generally hovering around 80F (27C). Rainfall is possible, though generally less frequent than in the summer months, and humidity levels begin to decrease, offering a more comfortable feel. Tropical storms and hurricanes are still a possibility, though the risk diminishes as the month progresses.
This period offers a pleasant balance between warm summer-like conditions and the more moderate temperatures of autumn. The reduced humidity and rainfall, combined with the still-warm ocean, create ideal conditions for a variety of outdoor activities, including swimming, snorkeling, diving, fishing, and boating. Historically, October marks the beginning of the “dry season” in the Florida Keys, signaling a shift toward milder, drier weather patterns. This transition makes it a popular time for tourism, as travelers seek to escape cooler temperatures elsewhere.
