Kainalu is a distinctive boys' name in United States, ranking #3111 in 1997 with 24 recorded births. The name reached its all-time peak in 2003 with 32 births ranking #3022. Since 1996, the popularity has increased by 41.2%. In 1997, approximately 1 in every 78,545 boys born was named Kainalu. FALLING Recent data shows the name is currently falling.