Aalborg's winters are typically cold and temperamental, with temperatures often dropping below freezing but occasionally rising into the mid-single digits. As spring arrives in March, temperatures begin to stabilize and warm up, reaching averages around 4°C by April, when mild days become more common. Summer brings warmth and stability, with June and July averaging highs in the mid-20s, but temperatures can drop slightly in August and September. Autumn is generally cool and unpredictable, with temperatures fluctuating between single-digit lows and teens. Winters return in December, with temperatures hovering around freezing point.