Basel, Switzerland, in September typically experiences a transition from summer to autumn. Average temperatures range from highs around 18-20C (64-68F) to lows around 10-12C (50-54F). Sunshine hours decrease compared to the summer months, and there’s an increased likelihood of rainfall. This period signifies a shift in weather patterns, with cooler temperatures and shorter days becoming more prevalent.
Understanding the typical climatic conditions of this period is beneficial for travelers planning visits to Basel. Packing layers of clothing is advisable due to fluctuating temperatures throughout the day. Awareness of potential rainfall allows visitors to prepare accordingly and pack appropriate gear. Historically, September marks the beginning of the harvest season in the region, influencing local activities and festivals. This transitional month offers a unique blend of summer’s lingering warmth and autumn’s crisp air.