Dogs will be prohibited at "timeshare" beaches in the Eurobodalla Shire from November 1 to April 30.
Dogs will be prohibited during the day from 9am to 5pm but allowed on or off-leash outside these hours.
The three types of dog access areas are 24-hour off-leash, timeshare and prohibited.
Eurobodalla Shire Council's environmental services manager Deb Lenson said ranger patrols had increased at the shire's beaches coming into the summer holiday season and would continue into the new year.
"Over winter, we installed easy-to-understand signs at designated dog exercise areas and beaches, indicating their status as dog-friendly, timeshare or dog-prohibited," Ms Lenson said.
"A key focus will be improving responsible pet ownership through education, and enforcement when appropriate."
The council said the new signs and increased patrols followed a review of council's "Companion Animal Management Plan", where changes were made to beach arrangements for dogs following passionate community feedback.
Ms Lenson said the new arrangements attempted to balance the needs of dog owners and non-dog owners alike.
"We are working hard to ensure resident and visiting dog owners are taking responsibility for their pets," she said.
"Dogs must be leashed until they reach off leash areas. When off leash they must remain under control and not bother people or wildlife; that's common curtesy as not everyone likes dogs.
"Rangers have the option of fining dog owners who disobey these regulations."
Ms Lenson said dog owners could find helpful information on responsible pet ownership, including rules for dogs on beaches, on Council's website https://www.esc.nsw.gov.au/living-in/about/for-pet-owners.
A printable one-page list with the dog access for each of the shire's beaches is also available http://bit.ly/ESCoffleash.