Here's the quote now (same wikipedia page). Seems someone's edited it since your quote. In many countries in the Southern Hemisphere, including Australia [3][4

Here's the quote now (same wikipedia page). Seems someone's edited it since your quote. In many countries in the Southern Hemisphere, including Australia [3][4], New Zealand and South Africa, winter begins on 1 June and ends on 31 August. [Edit: not sure what the disagreement is here, or why we're using wikipedia as an authority on when various countries mark seasons]