Sigri, Greece offers 1 beach perfect for sunbathing, surfing, swimming, and more. Sigri, South Aegean, Greece, is known for the Petrified Forest of Lesvos and the Natural History Museum of the Lesvos Petrified Forest. The best time to travel to Sigri, 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 23-26°C (73-79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!