The 31-year-old reunited with former Mamelodi Sundowns and Orlando Pirates boss Rulani Mokwena at the Botola Pro 1 during the January transfer window on a short-term loan deal.
He has repaid his his coach's faith by impressing in eight matches across all competitions, scoring one goal.
Lorch beat out Mohamed Rayhi and Mohamed Moufid to scoop the club honour.
The club celebrated Lorh with a post on their social media accounts.
“Please welcome your player of March, Thembinkosi Lorch,” posted Wydad.
Mokwena's side are currently in third place in the Moroccan top-flight, two points behind second-placed AS FAR and 17 adrift of league leaders RSB Berkane.
Wydad Casablanca have announced that head coach Rulani Mokwena has been placed on "exceptional leave" for the remaining games and will officially depart the Moroccan club at the end of the season.
AmaZulu FC midfielder Bongani Zungu has shed light on what went wrong with his expected move to Moroccan giants Wydad Casablanca before eventually signing for the KwaZulu-Natal-based club.
Rulani Mokwena will leave his job as head coach of Wydad Casablanca at the end of the current Botola Pro 1 season.
Miguel Cardoso says Thembinkosi Lorch left Mamelodi Sundowns for Wydad AC on loan because he was unhappy at the Betway Premiership club.
