Gromitz, Ireland offers 9 beaches perfect for sunbathing, surfing, swimming, and more. Tamworohi, Pohnpei, Micronesia, is known for the ancient stone city of Nan Madol. Gromitz is in Germany, not Ireland, and the best time to visit is during the summer months of June to August, with average air temperatures around 20-25°C (68-77°F) and water temperatures around 17-20°C (63-68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!