Aerial view of a cove

Fireworks in Saint-Cast-le-Guildo: Summer festivities as seen from Le Châtelet

Among the highlights, the Fêtes des Mielles take center stage. Every year, this popular event brings together locals and visitors alike for shows, games, dances, and that uniquely Breton sense of camaraderie. Contactthe local tourist office for the dates and the full program of this year’s event.

The fireworks display in Saint-Cast-le-Guildo is one of the most eagerly anticipated events of the summer. Set off right by the sea, they light up the bay with bursts of color that reflect off the water—a spectacle that is experienced not just with the eyes, but with the whole body, lulled by the rumbling sound of the explosions and the scent of the night air by the sea.

The beach and the boardwalk are the best spots to enjoy the show. Arrive early to find a spot, settle in comfortably, and let the party come to you. Families, couples, groups of friends—everyone comes together that evening in a warm and relaxed atmosphere.

The exact schedule—dates, times, and shooting locations—is announced each season by the festival committee and the town hall of Saint-Cast-le-Guildo. We recommend checking their official updates regularly so you don’t miss a thing.

Beyond the fireworks, Saint-Cast-le-Guildo and the surrounding area offer a rich program of events throughout the summer. Breton culture is on full display: fest-noz under the stars, outdoor folk and jazz concerts, street performances, craft markets…

Just a few miles away, Cap Fréhel and the Dinan area round out the cultural offerings with their own festivals and events. These day trips make for wonderful excursions to combine with your stay on the coast.

For younger children, summer activities in neighboring towns complement the programs and events offered at Le Châtelet —creative workshops, sports tournaments, and treasure hunts—all designed for children ages 5 to 12. Between the outdoor festivities and the on-site program, there’s hardly a moment of boredom during a vacation in Brittany.

Aerial view of a coastal landscape in Brittany.

To help you plan your stay, check the city’s events calendar on the Côtes d’Armor Tourist Office website, and feel free to ask our front desk staff for advice: we’ll be happy to recommend the activities and festivals you won’t want to miss during your vacation.