The Ministry of Internal Affairs confirmed to us several years ago that the Government has no official preference on when the seasons change. MetService and NIWA talk about both the Astronomical and Meteorological dates to the seasons.
However there are really four different end dates to Winter – and you can take your pick as to which one you prefer to go by.
So, when does Winter end and Spring start? It all depends on what your definition of ‘winter’ is…
on 31/08/2020 10:50pm
IMHO the seasons match the calendar; Jan, Feb Mar are Summer, Apr May Jun Autumn, July Aug Sep Winter and Oct Nov Dec Spring.
Though I can certainly see WW’s case for March being part of a 4 month Autumn and September being part of 4 month Spring
on 31/08/2020 11:18pm
You forgot to mention the season known, in Wellington at least, as “Shitsville”