Kainalu is a distinctive boys' name in United States, ranking #3563 in 2006 with 29 recorded births. The name reached its all-time peak in 2003 with 32 births ranking #3022. Since 1996, the popularity has increased by 70.6%. In 2006, approximately 1 in every 70,866 boys born was named Kainalu. FALLING Recent data shows the name is currently falling.