He says the council has listened to people who wanted outdoor dining without the tobacco smoke.
"The immediate benefit will be to clear the air and make these places more pleasant, cleaner and safer for diners, families and hospitality staff," he said.
The council's policy outlines its role towards making the city smokefree by 2025 and identifies areas that are, or are planned to be, designated as smokefree.
The council says the policy doesn't ban smoking, but encourages people through education and awareness to refrain at events and in certain public places.
It says that, because of national legislation, if there was a smokefree by-law, the council wouldn't be able to issue a fine for non-compliance and that means other enforcement options are limited.