The Lakeside and Tomaree aquatic centres will be closed throughout July for maintenance work.
Tilligerry pool at Mallabula was closed on June 3 and will remain closed until August 5.
Lakeside pool in Raymond Terrace will be closed July 8 to 22, while Tomaree pool in Salamander Bay will be closed July 22 to August 19.
"Our aquatic centres received a great number of people this season thanks to the wonderful weather we had during the summer months," Ian Crawford, Port Stephens Council's contract and services coordinator, said.
"Now is the time to do the maintenance works so we can provide quality services and keep the standards our community expects.
"The works will include cleaning, painting and essential plant and general maintenance.
"We know many people use the aquatic facilities in Port Stephens, so works have been staggered to ensure at least one facility is available to accommodate year-round pool users.
"We thank the community in advance for their understanding and cooperation during this period."