January greetings in English carry a unique blend of warmth and seasonal awareness. The classic 'Happy New Year' works perfectly in early January, but as the month progresses, you might shift to weather-related phrases like 'Wishing you warmth in this chilly season.'
For business correspondence, 'I hope this message finds you well in the new year' strikes a professional yet thoughtful tone. Personal letters could use cozier expressions such as 'May your January be filled with good books and hot drinks' - it captures that post-holiday comfort we all crave. The key is matching the formality to the relationship while acknowledging the distinctive character of this transitional month.