When a season is personified as a character or divine figure.
There is a strange, lingering human desire to capitalize the seasons. We do it for Monday. We do it for February. Why then do we strip the majesty from the four great shifts of our world? should you capitalize seasons
This rule applies to almost every word in the English language, and seasons are no exception. If the word is the first one in the sentence, capitalize it. When a season is personified as a character or divine figure