First Day Of Winter 2025 Australia 2025. In contrast, the 20th or 21st is usually the start of each season in the northern. The winter solstice marks the shortest day of the year when the north pole is tilted farthest away from the sun, and so the sun is at its lowest elevation in the sky.
The winter solstice, which marks the first day of winter 2025, occurs on saturday, december 21, 2025 at 4:21 a.m. Western australia had its warmest winter on record, and it was amongst the ten warmest winters on record for south australia, victoria, new south wales and queensland.