Temperatures are dropping in Switzerland, signaling the change to autumn as rain is forecasted and seasonal events begin[1]. The official transition from summer to autumn occurs on September 22, marked by the autumnal equinox and the start of fondue season[1].
Swiss citizens will head to polls on September 28 for major referendums, including proposals on digital identification (e-IDS) and the abolition of the imputed rental value tax, with additional local votes in 10 cantons[1].
Tuition fees for foreign students at Switzerland’s renowned Federal Institutes of Technology (ETH Zurich and EPFL) are increasing this semester; new international students not meeting residency requirements will pay 2,190 Swiss francs per semester, up from 730[1].
Parliament opened its autumn session on September 8, with foreign policy and geopolitics expected to dominate, including debates on immigration and the national broadcasting licence fee[7].
The recent imposition of a 39% tariff on Swiss exports to the United States is having a significant impact on Swiss industries. Switzerland now faces the highest US tariffs among European nations, which is particularly concerning given the importance of US-Swiss trade relations[3].
The delivery of F-35A fighter jets remains scheduled for mid-2027 according to Switzerland’s defense procurement agency. The jets will feature the latest Block 4 configuration, despite ongoing delays and costs related to technology upgrades in the US[5].
Notable upcoming events and festivals in September include the Tellspiele (William Tell performances) in Interlaken, Menuhin Festival in Gstaad, Lucerne Summer Festival, Knabenschiessen shooting competition in Zürich, federal Thanksgiving Day on September 21, and traditional alpine cattle descents that celebrate Swiss agricultural heritage[2].
In Geneva, TABEXPO 2025 (August 5–September 5) is a major tobacco industry gathering offering seminars, workshops, and innovation showcases[6]. Zürich hosts cultural events such as the Rundfunk Festival, the Viva La City Summer Pop Up, Zurich Design Weeks (Sept 4–14), and the Long Night of the Museums on September 6[4].
References
- [1] September 2025 in Switzerland: 6 important things expats need to know – IamExpat
- [7] Switzerland – News and perspectives – SWI swissinfo.ch
- [3] How the new US tariffs are already impacting the Swiss economy – swissinfo.ch
- [5] Switzerland says F-35A delivery on track for 2027 despite cost, delay concerns – Aerotime
- [2] Upcoming Holidays and Festivals in Switzerland – Rick Steves Europe
- [6] Latest Events in Switzerland (September Updated) | Trip.com
- [4] What’s On in Zurich Beginning of September 2025 – NewinZurich