Yes. That is a real issue. We are on the waterfront on Oyster bay. The Weather Rack is aprox 40 yds from the water's edge. No surf to speak of but we are in a high humidity/higher wind environent and corrosion is an issue in general .
I was thinking about re-purposing a spare indoor sensor for now. At least when it fails it is inexpensive to replace. I've found a shield that should fit.