Corn Islands, Nicaragua offers 1 beach perfect for sunbathing, surfing, swimming, and more. Corn Islands, South Caribbean Coast Autonomous Region, Nicaragua, is known for its pristine beaches and vibrant coral reefs, particularly around Little Corn Island and Big Corn Island. The best time to travel to the Corn Islands, Nicaragua, is from February to April, with average air temperatures around 82°F (28°C) and water temperatures near 81°F (27°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!