What kind of weather can I expect in late Nov/early Dec transatlantic Rome to Ft Lauderdale?

Most cruise lines schedule transatlantic ship repositioning cruises east to west, late in October or November. December could be a little shaky. This is considered to be the best times for a cruise ship crossing and take advantage of the calmer and sunnier Atlantic Ocean weather. This also puts the ship in position to take advantage of the winter tourist season in the U.S..