St John Kerikeri operations manager Nick Scott said the woman was unconscious for an unknown length of time and had suffered head injuries, fractures to a leg and possibly an arm, as well as multiple lacerations.
A private IRB was used to reach her at the base of the cliff, where she was given IV pain relief, immobilised and taken back to the beach where the Northland Electricity Rescue Helicopter was waiting to fly her to Whangarei Hospital.
Mr Scott said the rescue posed a number of challenges. Not only did rescuers have to contend with difficult access and egress, but also unpredictable swells, imminent darkness and electrical storms.
"It was excellent teamwork by a small group of locals and holidaymakers which contributed to successfully transferring the patient from the base of the cliff to the IRB and then the beach. I'd like to personally acknowledge them for their efforts," Mr Scott said.
Advanced paramedic Mark Going said he had planned to winch her from the rocks into the helicopter, despite the difficult conditions, but when the chopper arrived she was already in the IRB on her way to the beach. She was in a serious condition when airlifted to Whangarei, he said.
It is understood the Canadian visitor had originally been due to leave New Zealand this week. Her prognosis for recovering from her injuries was described as "reasonable".
Just north of the beach a Department of Conservation walkway, known for its spectacular coastal views, follows the ridge along the top of the Mahinepua Peninsula.