"Télen hideg van."

Translation: It is cold in winter.

[SamanthaGasmire]

Could it be, Winter is cold?

[vvsey]

The meaning is the same. The only question is, whether it is acceptable as a translation.

[mizinamo]

Wouldn't Winter is cold be Tél hideg?

[vvsey]

It would be "A tél hideg." You need the definite article in front of the noun in these general statements.

But not for some proper nouns. Or none? That needs to be figured out.

Péter is tall - Péter magas
Hungary is beautiful. - Magyarország gyönyörű.

But

Winter is cold - A tél hideg
Cars are fast - Az autó gyors
Apples are healthy - Az alma egészséges

Yes, the general statement even changes to singular, most of the time.

[fgarcor]

"It is cold in winter" should be accepted as well, without "the" article.

[ToddCorbin1]

I agree with you. In English, you don't have to use THE with winter. Both are correct.

[ZsofinSheehy]

What about
is it cold in the winter
It is said to be incorrect.