Besides cold weather, rain, and rough surf we also had to watch out for these hazards:
Sand spurs. The worst part was even if you wore shoes they would attach to your shoes and then transfer to the carpet in the house so you went barefoot in the house at your own peril.
These guys were easier to avoid. Although they were all along the path over the dunes to the beach you really had to wander off the path to step on one. The sand spurs, on the other hand, leaned into the path and were hard to avoid sometimes.