Typically, September in Cologne offers a pleasant transition from summer to autumn. Daily average temperatures generally range from highs around 19C (66F) to lows around 11C (52F). While sunshine is still common, it’s interspersed with more cloudy days and an increased chance of rainfall compared to the preceding summer months. This shift in climate brings a noticeable change in foliage, with the beginnings of autumn colors emerging in parks and along the Rhine.
Understanding the climatic conditions prevalent during this period is beneficial for visitors planning trips to the city. Packing layers of clothing becomes essential to accommodate the fluctuating temperatures throughout the day. The generally milder weather makes September an ideal time to explore Cologne’s outdoor attractions, from strolling along the Rhine River to visiting its numerous gardens and parks. Historically, September marked the beginning of the harvest season, and remnants of these traditions can still be found in local markets and festivals. The pleasant weather also allows for comfortable enjoyment of outdoor events and activities.