Despite the coincidence, the blue hair wore by Tomaz in the film has no relation to the character Emma in La Vie D'Adele. Beira-Mar was shot in July 2012, ten months before La Vie D'Adele premiere in Cannes, and the writers were not aware of the existence of the comic book. The color blue was chosen in reference to the story Martin tells about his childhood, when he got lost in the beach and lifeguards raised a blue flag meaning "lost child found".
The film was shot in chronological order.
Actor Mauricio Barcellos was discovered on Facebook by the directors. He had no previous acting experience.
During the 30 days of shooting, the actors Mateus Almada and Mauricio Barcellos slept in the same bedrooms as their characters do in the film.