September weather forecast
Switzerland

September in Switzerland signifies the onset of autumn, and with it comes a noticeable shift in the climate. In the Central Plateau, encompassing cities such as Zurich and Bern, temperatures start to cool, typically ranging from 12°C (53.6°F) to 25°C (77°F). This milder weather provides a refreshing escape from the intensity of summer, making outdoor excursions increasingly pleasant.

In regions like the Jura and the Alps, the landscape begins its transformative journey. The verdant meadows gradually adopt autumnal hues, creating a picturesque tapestry of reds, oranges, and yellows. While the higher altitudes of these regions might witness the early signs of winter snow towards the end of the month, the Central Plateau predominantly receives rainfall, with levels fluctuating between 813mm (32.01") and 1321mm (52.01"). The days, though gradually shortening, still boast a considerable amount of sunlight, making sightseeing and nature walks a delightful pursuit.

Rain in September can be sporadic, with some showers ushering in cooler air, hinting at the imminent winter. The diminishing intensity of humidity offers a crispness to the air, particularly in the mornings and evenings. The Fohn winds, if they emerge, can still bring with them warmer conditions, contrasting with the generally cooler trend of the month. As a transitional period, September offers visitors a harmonious blend of the residual warmth of summer and the initial chill of autumn, making it a captivating time to explore Switzerland's diverse terrains and climates.

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• Zürich - September »
  On the last day of September, in Zürich sunrise is at 07:24 and sunset at 19:07 CEST. On the first day of September in Zürich, sunrise is at 06:45 and sunset at 20:05.
• Geneva - September »
  In Geneva during September, the rain falls for 8.1 days and regularly aggregates up to 100mm (3.94") of precipitation. In Geneva, during September, the rain falls for 8.1 days and regularly aggregates up to 100mm (3.94") of precipitation.
• Basel - September »
  In Basel in September, during 8.8 rainfall days, 78mm (3.07") of precipitation is typically accumulated. In Basel in September, it is raining for 8.8 days, with typically 78mm (3.07") of accumulated precipitation.
• Lausanne - September »
  The month with the least rainfall in Lausanne is September, when the rain falls for 12.5 days and typically collects 38mm (1.5") of precipitation. In Lausanne snow does not fall in June through September.
• Bern - September »
  On the first day of September in Bern sunrise is at 06:50 and sunset at 20:09. On the first day of September in Bern, Switzerland, sunrise is at 06:50 and sunset at 20:09.
• Winterthur - September »
  The month with the least rainfall in Winterthur is September, when the rain falls for 9.9 days and typically collects 29mm (1.14") of precipitation. In Winterthur, in September, during 9.9 rainfall days, 29mm (1.14") of precipitation is typically accumulated.
• Lucerne - September »
  On the last day of September, in Lucerne sunrise is at 07:24 and sunset at 19:08 CEST. In Lucerne, in September, during 10.2 rainfall days, 107mm (4.21") of precipitation is typically accumulated.
• Lugano - September »
  On the first day of September in Lugano sunrise is at 06:45 and sunset at 20:02. On the last day of September, in Lugano, sunrise is at 07:21 and sunset at 19:06 CEST.
• Biel/Bienne - September »
  In Biel/Bienne in September, during 8.8 rainfall days, 97mm (3.82") of precipitation is typically accumulated. What time are sunrise and sunset in September in Biel/Bienne?
• Thun - September »
  In Thun during September, the rain falls for 15.9 days and regularly aggregates up to 53mm (2.09") of precipitation. The average high-temperature in Thun, Switzerland, slightly decreases in September, shifting from an enjoyable 19.9°C (67.8°F) in August to a moderate 15.6°C (60.1°F).
• Köniz - September »
  The month with the least rainfall in Köniz, Switzerland, is September, when the rain falls for 11.5 days and typically collects 23mm (0.91") of precipitation. The month with the least rainfall in Köniz is September, when the rain falls for 11.5 days and typically collects 23mm (0.91") of precipitation.
• La Chaux-de-Fonds - September »
  On the first day of September in La Chaux-de-Fonds, sunrise is at 06:52 and sunset at 20:12. In La Chaux-de-Fonds, during September, the rain falls for 10.6 days and regularly aggregates up to 128mm (5.04") of precipitation.