Thimonia, Greece offers 1 beach perfect for sunbathing, surfing, swimming, and more. Thimonia is known for its proximity to the ancient site of Aliki and the beautiful beaches of Thassos Island. The best time to travel to Thimonia, Greece, is from June to September, when the average air temperature is around 25-30°C (77-86°F) and the water temperature is approximately 24-26°C (75-79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!