Idrijski Log, Slovenia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Idrijski Log is known for its proximity to the UNESCO-listed Idrija Mercury Mine. The best time to travel to Idrijski Log, Slovenia, is during late spring to early autumn (May to September), with average air temperatures ranging from 15°C to 25°C and water temperatures in nearby rivers around 15°C to 20°C. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!