Mahoneys Beach, Canada offers 1 beach perfect for sunbathing, surfing, swimming, and more. Mahoneys Beach is known for its proximity to the historic town of Antigonish and the scenic Northumberland Strait. The best time to travel to Mahoneys Beach, Canada, is during the summer months of July and August, when the average air temperature is around 20°C (68°F) and the water temperature is approximately 16°C (61°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!