"We are honoured that the Prime Minister has chosen to join us to celebrate a truly significant day in New Zealand's calendar.
"Our people look forward to providing warm hospitality to the Prime Minister and our many other guests," Mr Davis said.
He said the Okahu Bay event would be focused on community, family, music, food, learning and fun.
English led the Government party on to Ratana Pa yesterday for annual celebrations and spoke for three or four minutes in Maori.
He is due to speak to an iwi leaders' meeting at Waitangi three days ahead of Waitangi Day but will not be there on the day.
Deputy Prime Minister Paula Bennett will represent the Government at the dawn service on the treaty grounds on Waitangi Day.