In 2005, he helped the club to its first major title in thirteen years, winning the Icelandic Women's Cup.
[6] On November 7, 2007, Ágúst was hired as the head coach of Hamar's men's team after Pétur Ingvarsson's resignation.
[7][8][9] He guided Hamar women's team to the Úrvalsdeild kvenna finals in 2010 where it lost to KR.
[10] In April 2011, Ágúst was hired as the head coach of Valur men's and women's teams.
[12] In February 2019, he signed a two-year contract to be the head coach of the Icelandic men's national under-20 basketball team.