From what I see on the NOAA buoy site, there are no wave/swell buoys active in the Florida keys.
Right now, I am looking at a NOAA forcast that is saying 5 to 7 foot wave heights for tomorrow, but Predict Wind, SailingWeather, and Sailflow all say 1 to 3 feet tomorrow.
Are there are other sources of actual wave height sampling available in the Florida Keys?