By education, Stormoen had the examen artium from 1890 as well as one year at the Norwegian Military Academy.
[1] From October 1900 to 1909 he was married to Inga Bjørnson (1871–1952); they had the child Guri Stormoen who became an actress.
[1] After some years in the United States, where he made his acting debut, Stormoen returned to Norway in 1895 and worked at various theatres.
[3] At the National Theatre Stormoen played both comic and tragic characters, often portraying elder men.
[5] Harald Stormoen was decorated as a Knight, First Class of the Royal Norwegian Order of St. Olav in 1932.