When is winter season? Weather condition forecasters in the Northern Hemisphere will inform you Dec. 1 through completion of February, which is called meteorological winter season. Based on Earth‘s tilt and orbit around the sun, it’s Dec. 21, 2025, through March 20, 2026.

This is huge winter season, which starts on the winter season solstice with the fastest day of the year north of the equator and ends with

the equinox (or “equal night”)symbolizing the start of spring.[Sun stalls

Stonehenge was developed to line up with the sun at the solstice. (Image credit: paul mansfield photography by means of Getty Images)The solstice marks the point at which the sun appears to stop its southward motion and starts moving northward once again in the sky. The solstice– Latin for “sun still,” — is the minute when the sun increases and sets at its most southerly points on the horizon as seen from the Northern Hemisphere.

At midday on Dec. 21, the sun will be above the Tropic of Capricorn, a line of latitude around 23.5 degrees south of the equator that goes through Argentina, Australia, Botswana, Brazil, Chile, Madagascar, Mozambique, Namibia, Paraguay and South Africa.

Whatever is reversed for the Southern Hemisphere, where it’s the summer season solstice south of the equator. Earth’s southern axis is tipped towards the sun, triggering the most hours of daytime and the quickest night of the year in the Southern Hemisphere.

These extremes are felt many of all at the world’s poles; the sun does not increase at the North Pole and does not set at the South Pole on the solstice. (Hence, “sun still.”