Style guides generally agree that you should lowercase the season unless it is formally used as part of a specific title.

Always lowercase unless part of a proper name (e.g., Winter Olympics ).

Of course, English wouldn’t be English without a few exceptions. There are specific instances where the seasons graduate from common nouns to proper nouns and require a capital letter.

Unless the season is starting your sentence, part of a specific event title (like the "Winter Olympics"), or being personified in a poem, .

Are you talking about any summer (lowercase) or a specific event called the Summer Solstice (uppercase)? Summary Table: Capitalization at a Glance Capitalize? General reference No "It gets cold in winter ." Start of a sentence Yes " Autumn is beautiful here." Part of a proper noun Yes "The Fall Festival begins tomorrow." Specific Semester Yes * "Enroll for the Spring 2026 term."