There will be a Kids Zone open until 8pm, with an inflatable obstacle course and other fun activities.
DJ Spinal will be the first to perform, at 6pm, before handing over the stage to artists from the SOLE Music Academy.
About 7.15pm, 11-piece band Capitol City will infuse the celebrations with their Tribute to The Commitments show.
After the kids' countdown, there will be performance by Dolphin Friendly, Glitch in the System, and Dillastrate and Friends.
Headline act The Black Seeds will take to the stage at 11pm.
Described by Clash Music as "one of the best live reggae acts on the planet", The Black Seeds have earned a reputation for rocking dancefloors around the world.
"There will be food trucks in North Hagley Park from 6pm so you can enjoy some great street food while you enjoy the live entertainment. Not all the food trucks will have Eftpos so if you are planning on buying food, we advise that you bring cash."
For quick entry, people are advised not to bring bags into the park as these will be searched on entry. People should also not bring any glass into the park.
NYE20 is an alcohol-free, smoke-free and vape-free event.
Cokojic said the events team are working closely with Fire and Emergency NZ on the plans for the New Year's Eve event.
"We have extra precautions in place and will continue to monitor conditions and follow the advice of Fire and Emergency NZ."
What you need to know
• There will be a drop-off point on Rolleston Ave, near Christ's College.
• Bike stands will be located inside the Armagh St entrance to Hagley Park.
• Scooter parking will be provided on Park Terrace.
• Mobility parking will be on Chester St West for those displaying a mobility pass.
• The Botanic Gardens Armagh St bridge will be closed to incoming traffic from 2pm.
• Use the interactive map to find central city parking.
• Metro buses will run to the Saturday timetable.