May to September offers ideal conditions with warm temperatures (15-24°C), extended daylight, and numerous outdoor events and festivals. Spring (April-May) brings blooming gardens and Easter markets. Summer (June-August) attracts peak crowds but features outdoor cafés, river activities, and evening events.
October-November offers pleasant autumn weather with fewer tourists, perfect for cultural activities and museum visits. December features spectacular Christmas markets transforming squares into festive wonderlands.
Winter (January-February) brings cold temperatures (0-4°C) and occasional snow, but fewer tourists allow museum exploration without crowds. Avoid mid-summer heat and August when many locals vacation.