The best time to visit Simitli is during late spring, from May to June, and early autumn, from September to October, when the weather is most agreeable for outdoor activities.During these months, you'll experience pleasant temperatures, typically ranging from 18°C to 25°C, with less rainfall than in the peak summer or winter. This makes it ideal for exploring the surrounding natural beauty, such as hiking in the Pirin Mountains or enjoying the Struma River.For those interested in cultural events, visiting in early autumn might coincide with local festivals and traditions, offering a chance to experience the region's heritage. The grape harvest season in nearby areas also begins in September, which can be an interesting experience for those who appreciate local produce and traditions.While summer (July-August) is also popular, it can be quite hot, with temperatures often exceeding 30°C, which might be less comfortable for extensive outdoor exploration.