To stand asa city councillor, candidates must be a New Zealand citizen, enrolled as a parliamentary elector and nominated by two electors whose names appear on the electoral roll for the Kirikiriroa Māori ward.
In a council statement, Huaki said it had been a privilege to represent the city as one of the first Māori ward councillors, but she needed to prioritise her health.
The byelection would be the city’s second in less than three months.
In February, a byelection was held to fill the seat left by former Hamilton city councillor Ryan Hamilton who was elected a member of Parliament in the October general election.
Hamilton City Council said it understood the changes signalled to Māori ward legislation by the coalition Government would have no bearing on the byelection.