Winters in Wiener Neustadt are chilly and unpredictable, with temperatures often fluctuating between freezing and mild. January is the coldest month, with average temperatures around 0°C, while February is slightly warmer but still quite cool. Spring arrives in March, bringing rising temperatures that can reach up to 24°C, but also occasional cold snaps. Summer months of June and July are warm and pleasant, with temperatures often reaching above 30°C, although August can be slightly cooler. Autumn brings a return to more moderate temperatures, with September being the mildest month before a cooling trend sets in ahead of winter.