According to a release, the suspect is between 15 and 25 years old and five feet nine inches to six feet tall, and weighs around 180 pounds with a slim build.
Officers say in at least two separate instances, the man has been reported wearing a neon purple shirt and a neon yellow jacket before being seen by the same victim later in all-black clothing with a hood pulled tightly around his face.
SPS confirmed that the sexual assaults involved physical, verbal and exposure-related advancements towards the victims.
Police are warning community members to be watchful of people and events around them.
Anyone with information is being asked to call the Saskatoon Police Service at 306-975-8300.