Cancer Society health promotion manager for Auckland and Northland, Kristina Marckean, applauded the move.
"Research shows us exposure to second-hand smoke in outdoor dining areas is a real risk. Smokefree al fresco areas will be a breath of fresh air for our cafes, bars and restaurants and will help to protect the health of all Aucklanders, especially hospitality workers," Marckean said.
Council research from 2016 shows 90 per cent of Aucklanders would be more likely to visit an outdoor dining area if it was smokefree.
It found 75 per cent of Aucklanders were supportive of smokefree outdoor dining areas.
Auckland Council began rolling out smokefree bans for public areas in November last year, including in civic and shared spaces, beaches and sports grounds.
Brad Meiklejohn, owner of Auckland cafe Orvieto which has been smokefree for close to two years, said customers were pleased with the smokefree move.
"Smoking has become less and less acceptable and I think hospitality venues would actually lose customers if smoking was to continue in outdoor dining areas," Meiklejohn said.
The council is providing restaurants and cafes with free signage to help implement the ban.