Fall 2025 begins on Tuesday, September 23, 2025, and ends on Monday, December 15, 2025, in the Northern Hemisphere. In the Southern Hemisphere, fall 2025 begins on Tuesday, March 20, 2025, and ends on Friday, June 19, 2025.
The start of fall marks the changing of seasons, as the days get shorter and the nights get longer. The average temperature also begins to drop, and leaves on trees begin to change color and fall off. Fall is a time of year that is often associated with beauty, change, and new beginnings.