Kallithea, Greece offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Kallithea, East Macedonia and Thrace, Greece, is known for its proximity to the archaeological site of Philippi, a UNESCO World Heritage Site. The best time to travel to Kallithea, Greece, is from May to September, with average air temperatures around 25-30°C (77-86°F) and water temperatures around 22-26°C (72-79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!