A blistering July heatwave is taking its toll on Switzerland’s famously punctual rail network. According to a study cited by World Radio Switzerland on the morning of 22 July 2026, delay minutes on Swiss Federal Railways (SBB) services jump by roughly 25 % whenever temperatures climb above 30 °C. While the average passenger loses only about half a minute per trip, cumulative disruption across Europe amounted to 1 397 lost operating days and more than 20 000 cancelled trains between early May and 5 July. The physics are straightforward: rail steel expands, tracks can buckle sideways by more than five centimetres and overhead lines sag, obliging dispatchers to impose emergency speed limits. SBB maintenance crews have already carried out overnight grinding on key stretches of the Lausanne–Geneva and Olten–Bern corridors, but the operator concedes that throughput will remain constrained until cooler weather returns. For corporate travellers the message is clear—build extra contingency time into itineraries and avoid back-to-back connections with flights at Zurich or Geneva airports. Logistic departments should monitor SBB’s live-ticker and consider issuing alternative tickets via air or long-distance coach for time-critical movements. Global-mobility teams relocating staff this summer may also need to adjust orientation schedules that rely on precise rail timetables for property viewings or immigration office appointments. The current pattern underscores a broader climate-risk trend: in 2022 SBB recorded the lowest punctuality rate in a decade after a series of “hot-rail” incidents. Infrastructure upgrades such as stress-resistant steel and automated track cooling systems are being tested but will take years to deploy network-wide. Travellers should download the SBB Mobile app for real-time push alerts and carry water—overhead air-conditioning systems are less effective when trains crawl at reduced speed. SBB says full normality could return as early as next week if forecast thunderstorms materialise.
Source: World Radio Switzerland (WRS)
