Yes, Excès Nocturne is definitely a goth band because most of their albums belong to the Gothic Rock, Deathrock, and Darkwave genres, which are among the core subgenres of goth music. Albums like Excès Nocturne, L'Echo Des Lumières, and L'Echo Des Silences are examples of their goth sound.
Excès Nocturne is located in France, Hauts-de-France, Lille, active in 1985 — 1989, 2006 — present. You can find more information about Excès Nocturne on their GothDB band page.
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