Latest figures show around 8000 of the 62,000 Cook Islanders that live in New Zealand, are able to speak te reo Māori Kūki ’Āirani.
Minister for Pacific Peoples Alfred Ngaro says it's a challenge especially for New Zealand-born Cook Islanders to learn their language.
"We want people to be proud of their Pasifika languages," he says. "To be able to realise its cultural capital that can be used in many different incidences.
"The language has the ability for us to mobilise ourselves and to motivate us and it shows that we have a point of difference."
Te reo Māori Kūki ’Āirani week’s celebration is from July 30 to August 5.