1st Day Of Winter 2025. Summer begins with the summer solstice, friday, june 20, 2025, 10:42 p.m. In 2024, the winter solstice date is saturday, december 21.

When do the four seasons start in 2024—for spring, summer, fall, and winter? 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.