Kainalu is a distinctive boys' name in United States, ranking #6143 in 2012 with 14 recorded births. The name reached its all-time peak in 2003 with 32 births ranking #3022. Since 1996, the popularity has decreased by 17.6%. In 2012, approximately 1 in every 135,473 boys born was named Kainalu. FALLING Recent data shows the name is currently falling.