Among these new cases, 37 are believed to be locally transmitted, according to the South Korean Centers for Disease Control and Prevention.
The last time South Korea's daily case figures were this high was April 8, when it reported 53 cases.
Since then, cases have largely stayed at around 30 or below per day.
Case numbers began spiking again recently, after a new cluster was identified in the capital Seoul's entertainment district of Itaewon, popular for bars and nightclubs. Nearly 250 cases have been linked to the cluster since it emerged on May 9.
The country now has a total of 11,265 cases and 269 related deaths, according to the KCDC.