September
Americannoun
noun
Usage
What is September? September is the ninth month of the year in the Gregorian calendar. It has 30 days and is between August and October.In the Northern Hemisphere, September is known as the first month of the autumn season, while in the Southern Hemisphere, it’s the first month of the spring season.Much of the world celebrates International Workers Day in May, but in the United States and Canada, a similar celebration, called Labor Day, is held. It is celebrated on the first Monday of September.The Jewish holiday Rosh Hashanah, which marks the beginning of the year, is normally held in September. The holiday’s exact date changes because it is set according to the Hebrew calendar, which is based on the Moon’s cycle.Example: For many people, September is a calm month before the holidays in October, November, and December.
Other Word Forms
- Septembral adjective
Etymology
Origin of September
First recorded before 1050; Middle English Septembre, Old English, from Latin September “seventh month” in the early Roman calendar; for formation December
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The average house price in Tylorstown was £87,000 in the year ending September 2025, while the average earnings for workers in Rhondda Cynon Taf were £33,976.
From BBC • Apr. 2, 2026
Last September, they hired former Postmates executive Dylan Abruscato to manage commercial partnerships.
From The Wall Street Journal • Apr. 2, 2026
Cliffwater made $375 million in fees from the fund in the 18 months that ended in September.
From The Wall Street Journal • Apr. 1, 2026
According to Forbes, World Liberty Financial—a crypto company launched by Trump and his family in September 2024—sold about $550 million of crypto tokens in the past year.
From Barron's • Apr. 1, 2026
On the morning of September 1, Mrs. Floor gave birth to a baby girl.
From "The Hiding Place" by Corrie ten Boom
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
