When Does Winter Officially Start 2025. What is the first day of winter 2025? Ending on 28 (or 29 during a leap year) february.
This year the winter will start on thursday december 21, 2023 (day of the winter solstice) and will end on tuesday march 19, 2025 with the spring equinox. 21, marking the official beginning of winter and ushering in the season’s characteristic cold fronts and holiday traditions.
