He married to Agnieszka (nee Dziewońska) on July 21, 2005. On September 16, 2005 Arkadiusz died in a tragic car accident in Griffen near Klagenfurt in Austria on the A2 motorway. His wife, Agnieszka, was driving, and she survived. Their car hit a concrete wall. They were on their way to Macerata, where Arkadiusz was due to begin playing his first season at the club Lube Banca Macerata. His last game in was as the Polish national team player on September 8, 2005, when Poland beat Portugal (3-0). His funeral held on September 22, 2005 in Ostrołęka.
The grave of Arkadiusz Gołaś in the cemetery in Ostrołęka.
After his death, his best friend from the Polish national team - Krzysztof Ignaczak took over wearing the shirt bearing number 16, to honor his memory. The silver medal won by the Polish national team in the World Championship 2006 was dedicated to him. On December 6, 2006 was posthumously awarded Gold Cross of Merit by the Polish President lech Kaczyńskifor outstanding sports achievements. A sport hall in Ostrołęka has been named after him. Since 2006 it has been the venue for the annual Memorial of Arkadiusz Gołaś. Sebastian Świderski, who was a player in Italian club Lube Banca Macerata in 2007-2010 played with Arkadiusz's number 16 on his shirt. Since 2013, the next Polish volleyball player to sign a contract with this club, Bartosz Kurek, has been playing with Gołaś's number 16 on his shirt. Mariusz Wlazły after gained title of World Champion 2014, he dedicated his medal to him.