Weinius received his first musical training at the
Adolf Fredrik's Music School in Stockholm and then studied at the
University College of Opera in Stockholm, receiving his exam in 1995. He made his international debut as a
baritone in the role of Guglielmo in
Così fan tutte and quickly became a regular guest at the Swedish opera houses in roles such as Renato/Greve Holberg in
Un ballo in maschera, Posa in
Don Carlos and Marcello in
La bohème. == Swedish career ==