"The winter is coming."

Translation: O inverno está chegando.

[KZONE88]

Um Lannister sempre paga suas dívidas.

[lugosky]

Para tudo o resto, MasterCard.

[Paulenrique]

Existem coisas que o dinheiro não compra. Para todas as outras coisa existe MasterCard.

[UneJamKuqEZi]

O inverno está chegando...

[311Ryan]

O norte se lembra.

[hannahmalina]

Came here just to see this

[PeterJones615755]

Beware the White Walkers!

[creatingpaul]

Why is the article not optional in this case?

[AllanDaemon]

Usually you use the article. You can speak without it and people will understand you, but I'm not sure if it's grammatically right.

[ExSquaredOver2]

I've discovered that it is customary and somewhat necessary to include the article in Portuguese on many occasions, including seasons.

[aidx767]

Could you say "O inverno está vindo?"

[Paulenrique]

Yes, but it is closer to English and sounds odd in Portuguese.

[paul904577]

Why is: 'está chegando o inverno' wrong?

[Ursu_Brun]

Because of the regular word order in Portuguese. Probably a poet would use that as an artistic construct.