just keep your eye on the forcast, odds that there's waves are slim, and with good winds even slimmer. with such limited available fetch and a small angle for northern swells and poor bathamtry the surf is pretty narrow
in the winter time, I'd say South Beach gets decent waves, maybe 1 or 2 days every couple weeks. I wouldn't put money on it, but it maybe find some place to rent a board in case there is surf. Surfing clear, 85 degree water, is definitely nice.