San Marcial de Rubicon, Spain offers 2 beaches perfect for sunbathing, surfing, swimming, and more. San Marcial de Rubicon, Canary Islands, Spain, is known for its historical significance as the site of the first European settlement in the Canary Islands. The best time to travel to San Marcial de Rubicon, Spain, is from April to October, with average air temperatures ranging from 70-82°F (21-28°C) and water temperatures around 68-75°F (20-24°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!