Last verified 2026-10-22
Jackknife Harbor Beach is in Chatham. We don't keep separate rules for each beach — below are Chatham's official dog rules that name or cover Jackknife Harbor Beach, quoted from the source. Follow posted signs, which can add shorebird closures at any time.
Here is exactly what Chatham's official rules say (last verified 2026-10-22): Dogs banned from beach areas May 1 – September 15 (service animals and police K-9 excepted). Jackknife Harbor Beach: dogs allowed before 9:00 am and after 6:00 pm during that period. Dogs barred from posted shorebird-nesting closures. (Source: Town of Chatham Park & Recreation Rules (PDF), §1.6, §1.75.)
Use the official source linked above, and see our Chatham page for parks, vets and more.