Fonterra Cooperative Group said milk collection was up 4.1 per cent for the season-to-date in December as a mild start to summer supported pasture growth.
The dairy giant collected 913.6 million kilograms of milk solids in the seven months to December versus 877.6 million/kgMS in the same period a year
earlier.
North Island collection was up 3.7 per cent at 566.6 million/kgMS while South Island production lifted 4.8 per cent to 347 million/kgMS.
"Overall, good animal health and favourable weather resulted in milk volumes ahead of last season, which was a three-year low where weather conditions and other factors had an adverse impact," Fonterra said.
Fonterra interim chief executive Miles Hurrell told NZME's The Country radio show earlier this month that the company still expects production to be about 3 per cent higher this season than last.
In Australia, meanwhile, milk collection for the six months to December 31 was 72.4 million/kgMS, down 14.3 per cent on the same period last season.