[1] Sør-Herøy is surrounded by the following islands: Nord-Herøy (to the northeast), Tenna (to the south), and Indre Øksningan (to the northwest).

To the west lies the Færøysundet strait, named after the islet of Færøya, which is actually a peninsula connected to Sør-Herøy.

To the east lies the Herøysundet strait, which is crossed by the Herøysund Bridge and Norwegian County Road 828 to Nord-Herøy.

[1] To the south lies the Tennsundet strait with the Tennsund Bridge and Norwegian County Road 161 to Tenna.

Herøy School serves students from Sør-Herøy, Tenna, and Nord-Herøy islands.