Mayor Anne Munro. Photo: RNZ
In a statement today, Anne Munro said she was diagnosed shortly before Christmas and would step away from public duties as she undergoes treatment.
Deputy Mayor Karen Morgan will take over mayoralty responsibilities.
"I know that council is in safe hands in my absence," Munro said.
"While I acknowledge that the mayoralty is a public role, I would appreciate being given some space and privacy for the next few months, while my family and I come to terms with what lies ahead of us.
"I know that so many in our community have had their lives impacted by cancer, and that you will understand some of what we are going through."
