And a man in his 20s died while he was diving in Whangaparaoa on Saturday.
A group of five were diving at Matakatia Bay when one of the group failed to surface.
The third death occurred when 42-year-old Whakatane woman Lita Tarau entered the surf to help her son who was in distress.
Mr Claridge said while it was positive to see the number of deaths down on previous years - there have been on average 10 drownings each Christmas during the past five years - the number of rescues indicate the toll could have been higher.
Mr Claridge said with almost a month to go until the end of the school holidays, all holidaymakers need to make water safety a priority, now.
"It doesn't matter what you're doing... the water safety basics are the same. Watch the weather, keep kids within arms reach, know your limits, don't drink alcohol if you're going out on or in the water and use the right safety equipment."