This is open Atlantic over a steep, shifting bottom. The shore break is short and heavy, the backwash pulls hard, and rip currents set up in the troughs between sandbars, strongest as the tide drops. Swim inside the guarded area while lifeguards are working, and treat the beach as unguarded surf outside the summer season, because it is.
The water is the thing people underestimate. Low sixties Fahrenheit is a normal July reading on this side of the Cape and June is colder. That is swimmable in short bursts and not swimmable for an hour. A rash vest or a shorty wetsuit changes the day completely and almost no visitor brings one.
Grey seals are constant from late summer onward, often lying in the surf line twenty yards out and watching the beach with obvious interest. They are the reason white sharks come in close, and the purple flag with the shark silhouette flies here as a standing seasonal advisory. Keep clear of seals in the water, avoid swimming at dawn and dusk or near schooling fish, stay in shallow water, and get out immediately if a lifeguard signals.
There is a small seasonal bathhouse with restrooms and cold showers at the top. No food, no rentals, no shade.