Deia, Spain offers 1 beach perfect for sunbathing, surfing, swimming, and more. Deia is known for its picturesque landscapes, historic stone houses, and its association with the poet Robert Graves. The best time to visit Deia, Spain, is from May to September, with average air temperatures around 75°F (24°C) and sea temperatures near 73°F (23°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!