Timing matters more in the Keys than people expect, mostly because of how distinctly the seasons split.
December through April brings the most reliable weather mild temperatures, calm seas, very little rain. It's also peak season, so the best weekly rental homes with private docks or open water views tend to book out months ahead, especially around holidays.
May and November sit in that sweet spot where the weather's still genuinely pleasant but the crowds and the rates both ease back. A lot of repeat Keys visitors quietly prefer these windows for exactly that reason.
Summer through early fall, meanwhile, is hurricane season technically but it's also when rates drop the most and flexible cancellation policies become much easier to find. Plenty of locals will tell you a well-timed summer week, watched carefully against the forecast, can be one of the best deals of the year.Marathon Florida luxury waterfront rental