when does fall 2025 begin

2 min read 01-12-2024

The arrival of fall is a highly anticipated event for many. Crisp air, vibrant foliage, and cozy sweaters – it's a season filled with delightful changes. But exactly when does fall 2025 begin? The answer isn't as simple as a specific date, as it depends on your definition of "fall."

Understanding the Astronomical and Meteorological Falls

There are two main ways to define the start of fall: astronomically and meteorologically. These differ slightly, leading to two different starting dates.

The Astronomical Fall: The Autumnal Equinox

Astronomically, fall begins with the autumnal equinox. This is the moment when the sun crosses the celestial equator, moving from the Northern Hemisphere to the Southern Hemisphere. This marks the day when day and night are nearly equal in length. For the Northern Hemisphere, the autumnal equinox in 2025 falls on September 23rd. This is the most precise astronomical definition.

The Meteorological Fall: A Simpler Approach

Meteorologists, however, use a simpler system based on the seasons' three-month periods. This provides more consistent seasonal tracking and data analysis. For meteorological purposes, fall always begins on September 1st and ends on November 30th. This system divides the year into four equal three-month periods, regardless of the astronomical positions of the sun.

So, When Does Fall Really Begin in 2025?

The answer depends on your perspective!

Astronomical Fall: September 23rd, 2025
Meteorological Fall: September 1st, 2025

Both definitions are valid, and which one you prefer is a matter of personal choice. For many, the astronomical equinox holds more significance as it marks the precise moment of the seasonal shift. Others prefer the meteorological definition for its straightforward predictability.

Planning Your Fall Activities

Regardless of which definition you use, the arrival of fall 2025 brings exciting opportunities for outdoor activities. Start planning your autumn adventures now!

Embrace the changing season:

Hiking and leaf peeping: Explore local trails and witness the breathtaking transformation of the leaves.
Apple picking: Visit a local orchard and pick your own apples for pies and cider.
Pumpkin patches: Find the perfect pumpkin for carving or decorating.
Fall festivals: Check your local listings for fairs and celebrations.
Cozy nights in: Enjoy warm beverages, movies, and the comfort of home.

Frequently Asked Questions about Fall 2025

Q: What is the autumnal equinox?

A: The autumnal equinox is the day when the Sun crosses the celestial equator, marking the beginning of autumn in the Northern Hemisphere and spring in the Southern Hemisphere. Day and night are roughly equal in length on this day.

Q: Why are there two definitions for the start of fall?

A: The astronomical definition is based on the Earth's position relative to the sun. The meteorological definition uses a simplified three-month calendar system for easier weather tracking and data analysis.

Q: When does winter begin after fall 2025?

A: Astronomically, winter begins with the winter solstice, typically around December 21st or 22nd. Meteorologically, winter begins on December 1st. Check an astronomical calendar for the precise date in 2025.

By understanding both the astronomical and meteorological definitions, you can fully appreciate the nuances of the season and plan your fall activities accordingly. Happy fall!