Tuapi, Nicaragua offers 1 beach perfect for sunbathing, surfing, swimming, and more. Castletown, Isle Of Man, Isle of Man, is known for Castle Rushen, a well-preserved medieval castle. The best time to travel to Tuapi, Nicaragua, is from December to April, with average air temperatures around 80°F (27°C) and water temperatures near 82°F (28°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!