The best time to go to Xanten is during the warmer months, specifically from late spring to early autumn (May to September), when the weather is most pleasant for exploring.During these months, you'll find the weather generally mild and sunny, superb for enjoying outdoor activities and the town's historical sites. The Archaeological Park Xanten (APX), a major highlight, is best experienced when you can comfortably wander its extensive grounds. Many local cafes and restaurants also open up their outdoor seating areas, adding to the relaxed holiday feel.Families often find July and August particularly appealing due to school holidays, allowing for a longer, more relaxed visit. The APX frequently hosts special events and re-enactments during these peak months, offering an engaging experience for all ages. The Xanten Südsee, a local lake, is also popular for swimming and water sports during the summer.Couples looking for a slightly quieter experience might prefer May, June, or September. The weather is still lovely, but there are generally fewer crowds than in the height of summer.