Saint Pierre du Bois, Guernsey offers 1 beach perfect for sunbathing, surfing, swimming, and more. Saint Pierre du Bois, Torteval, Guernsey, is known for the Torteval Scarecrow Festival and the historic St. Peter's Church. The best time to travel to Saint Pierre du Bois, Guernsey, is from June to September, with average air temperatures around 15-20°C (59-68°F) and sea temperatures around 15-17°C (59-63°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!