Most public beaches are pet friendly, but during certain times of the year, there are restrictions. From May 1st to around Labor Day, dogs are only allowed on the beach before 10 am or after 5 pm. After Labor Day until April 30th, dogs are allowed anytime on the beach are the standard rules. Some may vary by city or county laws.
At all times dogs must be on a leash.
Animal Laws by county/city
Horry County - Any animal on the beach must be on a hand-held leash not to exceed seven feet in length and under the control of the person having custody of the animal. Animals are not allowed on the beach from 10 a.m.-5 p.m. May 1 – Labor Day. It is unlawful to ride a horse or other animal on the public beach or within public marsh areas within the county limits March 1-Oct. 31.
Myrtle Beach - Dogs in public must be on a leash at all times. Dogs are permitted on the beach anytime from Labor Day through April 30. No dogs are allowed on the beach 10 a.m.-5 p.m. May 1- Labor Day. Horses are not permitted in the City of Myrtle Beach.
North Myrtle Beach - Dogs in public must be on a leash at all times. No dogs are allowed on the beach from 9 a.m.-5 p.m. May 15-Sept. 15.
Surfside Beach - Dogs are not allowed on the beach at any time May 15-Sept. 15.