Food prices have risen at the highest rate in more than a year.
Statistics New Zealand figures show prices increased 1.9% in January compared to December and are 0.8% higher than January 2012.
Fruit and vegetables rose 3.5% due to high prices for apples, mandarins and lettuces.
Prices of meat, poultry and fish prices also increased.
The monthly rise was the highest since a 2% rise in July 2011.
In the year to January, fruit and vegetables rose 5.9%, with kumara prices almost doubling because poor weather conditions resulted in smaller crops.
Meat products rose about 1.9% year-on-year, mostly due to chicken prices.