When Is The First Day Of Winter 2025. Ending on 28 (or 29 during a leap year) february. 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.

Winter ends on thursday, march 20, 2025, once the vernal equinox (spring equinox) begins. The first day of winter 2025 is on the 21 st june in australia.