Lisbon, Portugal offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Lisbon is known for its iconic landmarks such as Belem Tower, Jeronimos Monastery, and the historic Alfama district. The best time to travel to Lisbon, Portugal, is from May to September, when the average air temperature is around 70-80°F (21-27°C) and the water temperature is approximately 64-72°F (18-22°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!