New Horton, Canada offers 1 beach perfect for sunbathing, surfing, swimming, and more. Duncannon is known for Duncannon Fort, a historic coastal fortification offering scenic views and cultural events. The best time to travel to New Horton, Canada, is during the summer months of June to August, when the average air temperature is around 20°C (68°F) and the water temperature is approximately 15°C (59°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!