While Leuven is a delightful destination year-round, the best time to visit is typically from late spring (May and June) through early autumn (September and October) if you prefer pleasant weather for exploring.During these months, the weather is generally mild and agreeable, with fewer rainy days than in winter. This makes it ideal for walking around the city, enjoying the outdoor terraces, and experiencing the city's vibrant student life. You'll find many events and festivals happening, particularly in summer, which add to the city's appeal.If you're interested in the Christmas markets and festive atmosphere, late November and December offer a great experience. While it will be colder, the city is beautifully decorated, and the markets provide a cosy way to enjoy Belgian specialities. However, be prepared for chillier temperatures and the possibility of rain or even snow.