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.
That timeframe would see him potentially available to play in the Irish Open, which starts on 9 September - and he namechecked a number of other events too.
From BBC • Apr. 7, 2026
Tesla stock hasn’t closed below $340 since September.
From Barron's • Apr. 7, 2026
This somber gamble was the consequence of the two-pronged invasion of Poland, in September 1939, by Germany from the west and the Soviet Union from the east.
From The Wall Street Journal • Apr. 7, 2026
The U.S., which hasn’t posted a clean sheet since September, has become an error-prone mess on defense, with Pochettino’s wide, attack-minded approach revealing a structural fragility that has left the Americans’ thin back line exposed.
From Los Angeles Times • Apr. 7, 2026
It was a Wednesday afternoon in September, just before Labor Day weekend.
From Each Little Bird That Sings by Deborah Wiles
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.
