The direct translation of this phrase in Swahili wouldn’t make sense or not have meaning, because if you translate directly it would be. “Furaha mwaka mpya”. Phrases that are used to mean happy new year in Swahili are:
-Kuwa na mwaka mpya wenye baraka- have a new year of blessings. Or wishing you a new year of blessings.
-Kuwa na mwaka mpya wenye mafanikio na afya njema— have a new of good luck and good health. Or wishing you a new year of good luck and good health.
Nakutakia mwaka mpya wenye mafanikio na afya njema. – wishing you a happy new year of luck and good health.