Agios Nikolaos Municipal Unit, Greece offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Agios Nikolaos Municipal Unit is known for Lake Voulismeni and the Archaeological Museum of Agios Nikolaos. The best time to travel to Agios Nikolaos Municipal Unit, Greece, is from May to October, with average air temperatures ranging from 20°C to 30°C and water temperatures from 20°C to 25°C. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!