[3] Kári grew up in Árbær in Reykjavík where he competed in pole vault and football.
He was fired from his coaching position in October 1989 after a bad start for the team and subsequently stopped playing.
In October 2015, he temporary took over the team after the firing of Pieti Poikola[11] and until the hiring of José María Costa Gómez.
[12] Kári played 9 games for Íþróttabandalag Akraness in 1973, including 3 in the top-tier league.
He is the father of basketball players Axel Kárason, Arnar Snær Kárason and María Káradóttir and stepfather of former Icelandic Women's Basketball Player of the Year and national team member Kristín Björk Jónsdóttir.