Ottawa, Canada offers 1 beach perfect for sunbathing, surfing, swimming, and more. Ottawa is known for Parliament Hill, the Rideau Canal, and the National Gallery of Canada. The best time to travel to Ottawa, Canada, is from May to September, with average air temperatures ranging from 15°C to 25°C (59°F to 77°F) and water temperatures in the nearby rivers and lakes around 15°C to 20°C (59°F to 68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!