Happy new year in hebrew
In Hebrew, the traditional greeting for "Happy New Year" is:
שנה טובה ומתוקה (Shana Tova U'Metuka)
This translates to "A good and sweet year".
However, since the Hebrew calendar is lunisolar, the Jewish New Year is celebrated on Rosh Hashanah, which usually falls in September or October. The greeting for Rosh Hashanah is:
לכל השנה טובה (L'Chol HaShana Tova)
This translates to "For all a good year".
If you want to say "Happy New Year" in a more general sense, you can use:
שנה טובה (Shana Tova)
This is a common way to wish someone a happy new year, regardless of the specific date or holiday.