: Defined by the Earth’s orbit, this season ends the day before the winter solstice . In 2026, astronomical autumn ends on December 20, 2026 .
This is the most flexible—and honest—answer. For many people, autumn ends when: when does autumn end
: Winter begins on December 1. Key Differences Perspective End Date (Northern Hemisphere) Basis Astronomical Dec 21 or 22 Earth's orbit and Sun's position Meteorological Nov 30 Calendar months and annual temperature In the Southern Hemisphere, the dates are reversed: autumn begins in March and ends around : Defined by the Earth’s orbit, this season