Answer
Lifeguard stands are not staffed in winter—swimming is at your own risk and cold-shock danger is real even for strong swimmers. Polar-plunge charity events sometimes occur with organized safety crews; do not copy them informally. Beach Patrol rules still apply to public safety.
Sources: Ocean City Beach Patrol · Town of Ocean City · Visit Ocean City
Editorial visitor guidance for Ocean City, Maryland. Confirm current Town of Ocean City, Maryland DNR, NPS Assateague, and NWS rules when regulations or safety apply.
