Kainalu is a distinctive boys' name in United States, ranking #4434 in 2011 with 22 recorded births. The name reached its all-time peak in 2003 with 32 births ranking #3022. Since 1996, the popularity has increased by 29.4%. In 2011, approximately 1 in every 86,318 boys born was named Kainalu. FALLING Recent data shows the name is currently falling.