O Muino, Spain offers 3 beaches perfect for sunbathing, surfing, swimming, and more. O Muino, Galicia, Spain, is known for its picturesque landscapes and traditional Galician architecture. The best time to travel to O Muino, Spain, is during late spring to early summer (May to June) when the average air temperature is around 20-25°C (68-77°F) and the water temperature is approximately 16-20°C (61-68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!