Fall 2025 began on Monday, September 22, 2025, at 2:19 p.m. Eastern Time (18:19 UTC), marked by the autumnal equinox. It will end on Sunday, December 21, 2025, with the beginning of winter at the winter solstice.
Details on Fall 2025
- The autumnal equinox signals the official start of fall in the Northern Hemisphere when the sun is directly over the equator.
- The exact timing varies slightly by time zone, but for the U.S. Eastern time zone, it was September 22 at 2:19 p.m.
- Fall lasts from the equinox in late September through the winter solstice in late December.
Definitions of Fall
- Astronomical fall is defined by the equinoxes and solstices.
- Meteorological fall is the three months of September, October, and November, based on climate data.
Thus, the official fall season for the year 2025 started on September 22 and will end on December 21 according to the astronomical calendar.
