Police say the women were walking alone in the Brynmill and Oystermouth Road areas.
Police have arrested a 16 year old boy following a string of sexual assaults on women in Swansea.
The teenager was arrested after three reports were made of women being indecently assaulted as they walked alone in the Brynmill and Oystermouth Road areas this week.
We're told police carried out an operation involving plain clothed officers.
The teenager has been bailed while investigations continue.
Extra police patrols will continue in the area.
Anyone with information should contact 101 quoting occurrence 2000165407.