Kainalu is a distinctive boys' name in United States, ranking #4137 in 2000 with 19 recorded births. The name reached its all-time peak in 2003 with 32 births ranking #3022. Since 1996, the popularity has increased by 11.8%. In 2000, approximately 1 in every 103,365 boys born was named Kainalu. FALLING Recent data shows the name is currently falling.