Winter in New Zealand starts on 1 June and runs through to 31 August.

Here’s a quick breakdown:

  • Official winter months in NZ: June, July, August.
  • Start of winter: 1 June is generally recognised as the beginning of winter (meteorological winter).
  • Coldest period: July is usually the coldest month, with August still quite chilly before spring signs appear in September.

So if you’re planning around when does winter start in NZ , you can treat 1 June as the start of winter each year.