When Is Winter 2025 Start Date. By the meteorological calendar, the first day of winter is always 1 december; 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 reached its furthest tilt away from the sun and begins to change directiion back.
In 2025, these are the astronomical dates and times for the start of each season: Learn all about the shortest day of the year—and tell us what winter means to you!
When Is Winter 2025 Start Date Images References :