Kainalu is a distinctive boys' name in United States, ranking #3227 in 2002 with 28 recorded births. The name reached its all-time peak in 2003 with 32 births ranking #3022. Since 1996, the popularity has increased by 64.7%. In 2002, approximately 1 in every 69,338 boys born was named Kainalu. FALLING Recent data shows the name is currently falling.