The name Sonni is of Scandinavian origin, derived from the Old Norse elements 'sunnr' meaning 'sun' and 'i' which signifies 'one'. It is a unisex name but is more commonly used for girls. Sonni is often associated with warmth, radiance, and positivity due to its sun-related origins. It has gained popularity in recent years as parents seek unique yet meaningful names for their children.
"Sonni was quite popular as a baby name from the late 60s to the early 80s, with peaks of 15 and 22 births respectively in 1981 and 1987. However, its popularity has since declined, with fewer than 10 births per year occurring after 1994."