Capitalize seasons in titles when you're using title case, because season names count as major words. In sentence case, use their ordinary styling unless they begin the title or belong to a proper name.
The confusion comes from applying ordinary sentence rules to headings. Start with your title's capitalization style, then handle any formal names.
Key Takeaways
- Capitalize all season names in title case.
- Use season names in their ordinary style in sentences and sentence-case headings, except at the beginning.
- Preserve capitals in proper names such as Winter Olympics.
When to Capitalize Seasons in Titles
Season names follow the same title capitalization rules as other common nouns. The deciding factor is whether your heading uses title case or sentence case.
Title case capitalizes every season
AP, APA, Chicago, and MLA title case all capitalize season names. They qualify as major words whether they describe a season directly or modify another noun.
For example, The Summer I Turned Pretty capitalizes "Summer" as part of its title. Similarly, "Winter" takes a capital in a title-case heading about winter sports.
Here are paired examples showing the difference.
| Title case | Sentence case |
|---|---|
| A Guide to Winter Sports | A guide to winter sports |
| Planning Your Autumn Vacation | Planning your autumn vacation |
| The Spring Equinox Explained | The spring equinox explained |
The subject stays the same; only the capitalization system changes.
Sentence case usually keeps seasons lowercase
Sentence case capitalizes the first word and proper nouns. Seasons otherwise keep their ordinary styling. Therefore, write "Preparing for winter" but "Winter preparation tips."
Our guide to title case versus sentence case explains how these styles affect complete headings.
Capitalizing "Winter" in a title-case heading doesn't make winter a proper noun. The capital comes from the heading style.
Season Names in Sentences and Formal Names
In running text, season names take ordinary capitalization unless another rule applies. Merriam-Webster's season capitalization guidance explains that season names are common nouns.
Ordinary descriptions stay lowercase
Write "winter sports" and "our fall schedule." Adding a year doesn't automatically require capitals: "fall 2026" remains a descriptive reference.
A season name takes a capital at the beginning of a sentence.
Unlike seasons, named holidays take capitals. Write "school vacation" but "Labor Day vacation."
Formal names retain their capitals
Capitalize Winter Olympics because it's the proper name of an event. By contrast, "winter sports" describes a general category.
Likewise, Fall Semester 2011 takes capitals when an institution uses that wording as the semester's formal name. In ordinary references, write "the fall semester" or "a fall schedule" without capitals.
A date alone doesn't make a phrase an official name. This distinction also applies to named seasonal programs: capitalize their established seasonal names, but use ordinary capitalization for general descriptions such as "a reading program."
Why Spring Equinox and Summer Solstice Stay Lowercase
Write spring equinox and summer solstice in running text. These are descriptive astronomical terms, not proper names. In title case, however, write "Spring Equinox" and "Summer Solstice."
An equinox literally means "equal night," as the National Weather Service explains. It happens twice annually, around March 20 and September 23. In the Northern Hemisphere, these are the spring and autumnal equinoxes. They're also called the vernal equinox and fall equinox, respectively.
At an equinox, daylight and nighttime are approximately equal in the Northern Hemisphere, though they aren't exactly equal everywhere. In the Southern Hemisphere, the seasonal labels reverse: March brings autumn, and September brings spring.
"Solstice" means "sun standing." Around June 21, the June solstice brings the year's longest daylight in the Northern Hemisphere. Around December 21, its winter solstice brings the shortest daylight.
The Southern Hemisphere experiences the opposite seasons on those dates because Earth's tilted axis changes which hemisphere faces more directly toward the sun.
Does Autumn Follow Different Capitalization Rules?
Autumn and fall follow identical capitalization rules. Both are written without capitals in ordinary descriptions, and both take capitals in title case.
Their different names reflect language history. Autumn has been used in the British Isles since the 1300s. The phrase "fall of the leaf" evokes leaves dropping. References to "fall of the leaf" and the shorter "the fall" date from the 1500s to about 1800.
According to The New Fowler's Modern English Usage, fall became standard in America from the late 17th century onward.
American English also uses autumn, especially in the conventional expression "autumnal equinox." However, "fall equinox" is valid too. Neither expression needs capitals in running text.
Frequently Asked Questions
What words should stay lowercase in titles?
Articles such as "a," "an," and "the" usually stay lowercase within title-case headings. Short conjunctions and many prepositions do too.
However, style guides differ on longer prepositions. Our comparison of title case styles explains those differences. Season names remain capitalized across the major styles.
What's an easy capitalization rule for kids?
Teach children to capitalize sentence beginnings, people's names, places, days, months, and holidays. Explain that seasons are generally written in their ordinary form.
The MINTS reminder covers Months, I, Names, Titles, and Starts of sentences. However, "Titles" doesn't mean capitalizing every word: smaller connector words often stay lowercase.
Choose the Style Before Capitalizing the Season
The rule depends on context: capitalize seasons as major words in title case, but usually lowercase them in sentences and sentence-case headings. Formal names keep their established capitals.
Once you've identified the capitalization style, season names become straightforward. Treat them like other common nouns, with separate rules for sentence beginnings and proper names.