Saint Peter Port, Guernsey offers 5 beaches perfect for sunbathing, surfing, swimming, and more. Saint Peter Port, Castle Cornet and Hauteville House. The best time to travel to Saint Peter Port, Guernsey, is from June to September, with average air temperatures around 60-70°F (15-21°C) and water temperatures around 59-64°F (15-18°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!
