First Day Of Winter 2025 Uk. The 2025 december solstice takes place on december 21, at 9:21 utc. This year, astronomical winter in the northern hemisphere begins on.
The winter solstice, which marks the first day of winter 2025, occurs on saturday, december 21, 2025 at 4:21 a.m. In 2025, the first day of winter is saturday, december 21.