The 29-year-old defeated Hungary's Fabian Marozsan 6-2, 6-3 in the second round of the men’s singles on Wednesday.
Hurkacz, ranked No. 74 in the world, will next face home favourite Valentin Vacherot.
In the first round, he beat 15th-seeded Italian Luciano Darderi 7-6, 5-7, 6-1.
Hurkacz entered the tournament on a seven-match losing streak that began in the second round of the Australian Open, where he lost to American Ethan Quinn.
He then suffered first-round defeats in Montpellier, Rotterdam, Dubai, Indian Wells and Miami, as well as at a lower-tier event in Cap Cana, Dominican Republic, marking the worst run of his professional career.
The slump led to his split with Chilean coach Nicolas Massu. The Monte Carlo tournament is the first he is playing without a coach.
(gs)
Source: IAR, PAP