YOU SAID:
I like winter because of christmas
INTO JAPANESE
私はクリスマスのために冬が好きです
BACK INTO ENGLISH
I like winter for Christmas.
INTO JAPANESE
私はクリスマスに冬が好きです。
BACK INTO ENGLISH
I like winter at Christmas.
INTO JAPANESE
私はクリスマスに冬が好きです。
BACK INTO ENGLISH
I like winter at Christmas.
That didn't even make that much sense in English.