Portinho da Arrabida, Portugal offers 1 beach perfect for sunbathing, surfing, swimming, and more. Portinho da Arrabida is known for its stunning beaches and crystal-clear waters. The best time to travel to Portinho da Arrábida, Portugal, is from late spring to early autumn (May to September), when the average air temperature ranges from 20°C to 30°C (68°F to 86°F) and the water temperature is typically between 18°C and 22°C (64°F to 72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!