Phare du Mont-Saint-Clair, Sète, Historical lighthouse on Mont Saint-Clair, Sète, France.

The Phare du Mont-Saint-Clair is a 23-metre octagonal stone tower on the flank of Mont Saint-Clair in Sète, slightly tapering and crowned by an octagonal gallery on corbels. Its light sits at 18.90 metres. The light-grey masonry is accented by darker corner stones, two small rectangular windows pierce the front face, and a turquoise door fills the arched base doorway.

Construction was decided after the 1898 revival of decrees from 1853 and 1878, and began under a ministerial decision of 3 January 1900. The contractor Massol started the work but died soon after; the Troglia firm resumed it in late 1900 on foundations already laid. The lighthouse was lit on 23 April 1903, electrified in 1938, and inscribed as a monument historique in 2011.

The lighthouse stands near the maritime cemetery and Paul Valéry Museum, showing how deeply connected Sète remains to the sea. It reflects the town's identity as a major Mediterranean port with a strong seafaring heritage.

The lighthouse sits on a hilltop with good views over the town and harbor, though it is not always open to visitors. Check local conditions before heading up, especially on days with poor weather or strong winds.

The lighthouse was listed as a monument historique in 2011. Its light sits at a height of 18.90 metres, and until 1938 it ran on oil vapour rather than electricity. The tower stands on the flank of Mont-Saint-Clair, above the cimetière marin and the Paul-Valéry museum, close to Fort Richelieu.