The Theatre is conveniently situated on the main A496 road. Car parking is provided opposite with a bridge linking to the theatre complex. It has breathtaking views across the golf course to Tremadog Bay.
The theatre complex consists of a raked auditorium seating 266 with an apron stage, a film screen, backstage area, workshop and projection room. The theatre has a foyer with bar, exhibition space and storeroom together with the use of a green room, there are also two fully equipped dressing rooms. New facilities for the disabled have been installed, including a lift.
Theatr Harlech is open all year round and provides a varied programme of events including Drama, Dance, Classical Music, Folk and World Music, Opera, Ballet, Light Entertainment, Popular and Art House Films. Arts and Crafts are exhibited in the foyer. Theatr Harlech is also available for hire.