| Saint-Cast-le-Guildo | |
| Native Name: | Sant-Kast-ar-Gwildoù |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason de la ville de Saint-Cast-le-Guildo (Côtes-d'Armor).svg |
| Coordinates: | 48.63°N -2.2567°W |
| Insee: | 22282 |
| Postal Code: | 22380 |
| Arrondissement: | Dinan |
| Canton: | Pléneuf-Val-André |
| Mayor: | Marie-Madeleine Michel[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Dinan Agglomération |
| Elevation Min M: | 0 |
| Elevation Max M: | 76 |
| Area Km2: | 22.63 |
| Website: | tourist office |
Saint-Cast-le-Guildo (in French pronounced as /sɛ̃ ka lə ɡildo/; Breton: Sant-Kast-ar-Gwildoù; Gallo: Saent-Cast-le-Giledo) is a commune in the Côtes-d'Armor department of Brittany in northwestern France. It is port city on the English Channel as it also has a nautical center, the Centre Nautique de Saint-Cast (CNSC) ranked 3rd to 6th in the nation.
The river Arguenon flows through the commune, where it empties into the sea.
The Battle of St Cast took place on September 11, 1758, when the French repelled the English. The English first attacked the region of Dinard by sea, but were stopped at the Rance by the Vauban fortifications. They were forced to retreat to their fleet in front of St-Cast, where Emmanuel-Armand de Richelieu was waiting for them and launched an attack on the beach while the British were fleeing back onto their vessels. The casualties were heavy for the British army as they lost 1,160 soldiers: the French lost about 445 men. Today there is a monument in the Bourg (neighborhood of St-Cast) showing a greyhound defeating a lion; the Castins defeating a lion (the English symbol).
Inhabitants of Saint-Cast-le-Guildo are called castins in French. In 1971 the former commune of Notre-Dame-de-Guildo was absorbed into Saint-Cast-le-Guildo.
Saint-Cast features many of the typical dishes of Breton cuisine, such as the Kouign-amann, or the local specialty, Le Castin, which is originally what we call people from there, or in this case the cake.
Saint-Cast-le-Guildo has an oceanic climate (Köppen climate classification Cfb). The average annual temperature in Saint-Cast-le-Guildo is . The average annual rainfall is with October as the wettest month. The temperatures are highest on average in August, at around, and lowest in February, at around . The highest temperature ever recorded in Saint-Cast-le-Guildo was on 5 August 2003; the coldest temperature ever recorded was on 17 January 1985.