Māori TV is to film the performances. Watchers will be charged - children under-5 free, children 5-10 pay $5 and everyone else will pay $10.
In the Aotea Region the competition is usually held in June or July - but in other parts of New Zealand it's usually in summer. The trust has asked for the change to a summer event, which may set a precedent.
There are nine teams confirmed for the competition. Te Reanga Mōrehu o Rātana, the Rātana kapa haka group, has won the last five regionals.
Also competing from Whanganui will be Te Matapihi and Te Taikura o Te Awa Tupua, and there are four Taranaki groups.
The best three groups will go on to compete in February 2019, at Te Matatini in Wellington.
The pōwhiri for the regional competition takes place at Rātana on February 23, at 1pm.