Kainalu is a distinctive boys' name in United States, ranking #4068 in 2007 with 25 recorded births. The name reached its all-time peak in 2003 with 32 births ranking #3022. Since 1996, the popularity has increased by 47.1%. In 2007, approximately 1 in every 83,009 boys born was named Kainalu. FALLING Recent data shows the name is currently falling.