Wloclawek's winters are cold and variable, with temperatures often dropping below freezing, but occasionally rising to mild highs around 10°C in January. As spring approaches, temperatures gradually warm up, reaching averages of 6°C by April and 12°C by May, with the latter month also bringing warmer nights. Summers are pleasant, with July being the warmest month, averaging around 21°C, while August and September experience a slight cooling trend. Autumn is mild, with temperatures ranging from 5 to 10°C in October and November, before dropping back down into winter's chill by December.