The best time to visit Pirna is during the late spring and early autumn months, specifically from May to June and September to October. These periods offer pleasant weather, ideal for exploring the town and surrounding Saxon Switzerland National Park.During May and June, the weather is typically mild and sunny, with temperatures ranging from 15°C to 25°C. This is superb for enjoying outdoor activities like hiking, cycling along the Elbe River, and taking boat trips. The gardens are in full bloom, adding to the scenic beauty of the region.September and October also offer comfortable temperatures, usually between 10°C and 20°C, and the landscape is particularly picturesque as the leaves change colour. This time of year is excellent for photography and enjoying the local wine harvest festivals. The crowds tend to be smaller than in the peak summer months, allowing for a more relaxed visit.While July and August are also popular, they can be quite warm and see more tourists, especially at major attractions.