Oak Bay, Canada offers 1 beach perfect for sunbathing, surfing, swimming, and more. Oak Bay, New Brunswick, Canada, is known for the Oak Bay Campground and its proximity to the Bay of Fundy. The best time to travel to Oak Bay, Canada, is from June to September, when the average air temperature is around 20°C (68°F) and the water temperature is approximately 12°C (54°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!