Kainalu is a distinctive boys' name in United States, ranking #5672 in 2016 with 16 recorded births. This places Kainalu in the top 40% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2003 with 32 births ranking #3022. In 2016, approximately 1 in every 118,576 boys born was named Kainalu. FALLING Recent data shows the name is currently falling.