Weather in Nuremberg remains fairly temperate throughout the year which renders it to be a perfect tourist destination year around. The best time, however would be to visit it during Spring (March- May) when nature blooms to the fullest in this European city. Autumn months (October- November) also offer a pleasing landscape to tour around Nuremberg under clear and sunny sky. If you prefer winters, then visit this city during December as the whole of it immerses itself in the festive vibe with Christmas markets offering delicacies.
So, the best time to visit Nuremberg is in the months of March to May and October to November.