Learn Hardcore Portuguese (Portugal): Tarde é longa.

In Portuguese, articles can sometimes be omitted in general or poetic statements. While you might also see A tarde é longa in other contexts, dropping the article here adds a sense of universality and emphasizes the inherent quality of the afternoon rather than referring to one specific instance.

How do I know that the adjective longa is correctly used with tarde?

Portuguese adjectives must agree in gender and number with the noun they modify. Since tarde is a feminine singular noun, the adjective takes the feminine form longa rather than the masculine longo. This agreement is a key aspect of Portuguese grammar.

What does tarde mean in this context? Does it strictly translate to "afternoon"?

Yes, tarde typically means "afternoon." In this sentence, it refers to the period of the day following the morning. While context may occasionally expand its meaning, here it is best understood as "afternoon is long."

Is it acceptable to omit the article in such sentences, or would using A tarde é longa be more correct?

Both forms are acceptable, but they can convey slightly different nuances. Using the article (A tarde é longa) makes the statement a bit more specific, while omitting it emphasizes a more universal, almost philosophical observation about the nature of the afternoon. The choice depends on the speaker’s stylistic intent.