Gavathas, Greece offers 1 beach perfect for sunbathing, surfing, swimming, and more. Gavathas, North Aegean, Greece, is known for its proximity to the Petrified Forest of Lesvos and the Monastery of Ypsilou. The best time to travel to Gavathas, Greece, is from June to September, when the average air temperature is around 25°C (77°F) and the water temperature is approximately 23°C (73°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!