Dorchester Parish, Canada offers 1 beach perfect for sunbathing, surfing, swimming, and more. Dorchester Parish is known for the Keillor House Museum and the annual Sandpiper Festival. The best time to travel to Dorchester Parish, Canada, is in July when the average air temperature is around 20°C (68°F) and the water temperature is approximately 18°C (64°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!