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
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 see 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 House has already left Washington for its summer recess and is unlikely to consider the bill before September.
From Barron's ● Jul. 29, 2026
It is the first time Burnham has set out his position on the issue since becoming prime minister, as MPs prepare to debate it again when Parliament returns in September.
From BBC ● Jul. 29, 2026
Despite the absence of signs that wage growth is accelerating, investors expect the ECB to raise its key interest rate for a second time since the conflict began when policymakers next meet in September.
From The Wall Street Journal ● Jul. 29, 2026
In the CSA's report it references previous examples like in September 2024 when an earlier model of ChatGPT escaped its container to get an answer it needed for another test.
From BBC ● Jul. 28, 2026
The seventh of September is a glorious, sunny day.
From "The Bletchley Riddle" by Ruta Sepetys and Steve Sheinkin
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.
