Christmas songs usually start playing on the radio around the end of November or early December. Many radio stations have their own Christmas playlists that include classic carols and newer holiday hits. Some stations even have special programming dedicated to non-stop Christmas music, so you can listen to the season's most festive tunes all day long. The exact timing of when Christmas music starts playing on the radio can vary by region and station, but you can usually expect to hear some holiday tunes during the holiday season.