Kainalu is a distinctive boys' name in United States, ranking #4361 in 2009 with 23 recorded births. The name reached its all-time peak in 2003 with 32 births ranking #3022. Since 1996, the popularity has increased by 35.3%. In 2009, approximately 1 in every 86,231 boys born was named Kainalu. FALLING Recent data shows the name is currently falling.