The best time to visit Vilvoorde, Flemish Region, Belgium, is during the late spring (May to June) and early autumn (September to October) months. These periods offer pleasant weather conditions, making it ideal for exploring the city and its surroundings.During late spring, the weather is generally mild and sunny, with temperatures ranging from 15°C to 20°C. This is a lovely time to enjoy outdoor activities, such as cycling along the Zenne river or exploring the city's parks. The days are long, allowing for extended sightseeing, and the local flora is in full bloom, adding to the city's appeal.Early autumn also provides comfortable temperatures, typically between 10°C and 18°C, with less chance of extreme heat or cold. The autumn colours are often quite striking, particularly in areas like the Hanssenspark. This season is superb for those who prefer a more relaxed pace, as the summer crowds have dispersed.