First Day Winter 2025 Season. Winter 2025 starts on sunday, december 21st in the northern hemisphere, with the first day of winter being the shortest daylight day of the year with the earth's axis having. The winter solstice, which marks the first day of winter 2024, occurs on saturday, december 21, 2024 at 4:21 a.m.
The table below will allow you to view the winter start and end dates for the years 2023, 2024, 2025 and 2026. Learn all about the shortest day of the yearโand tell us what winter means to.