While Grudziadz can be visited year-round, the best time to go is during the late spring (May-June) and early autumn (September-October) for pleasant weather and fewer crowds.During late spring, the weather is mild and comfortable, with temperatures typically ranging from 15°C to 20°C. This period is ideal for exploring the city's outdoor attractions, such as the historic Granaries along the Vistula River and the Citadel. The city's parks and green spaces are in full bloom, making for enjoyable strolls.Early autumn offers similar comfortable temperatures, usually between 10°C and 18°C, and the changing colours of the leaves add a scenic backdrop to your visit. The summer crowds have dispersed, allowing for a more relaxed experience when visiting museums or enjoying a coffee in the Old Town.