(de-news.net) – Germany’s ongoing heatwave has shattered both daytime and nighttime national temperature records, prompting widespread warnings over severe heat stress, infrastructure damage, and transport disruption. Authorities, transport operators, and political leaders responded with calls for water conservation, expanded heat-protection measures, and longer-term adaptation policies, as extreme temperatures continued to affect large parts of the country. A forest fire in a nature reserve in Rhineland-Palatinate increased by the extreme temperatures is threatening critical regional mobile communications infrastructure, and has prompted large-scale evacuations.
A forest fire has been burning since Saturday afternoon in a nature reserve contaminated by unexploded Second World War ordnance in the Bad Kreuznach district, where repeated detonations of buried munitions have forced the suspension of direct firefighting operations. District Administrator Bettina Dickes (CDU) stated that the hazardous conditions currently make it impossible for emergency crews to attack the fire at its center, requiring the blaze instead to be allowed to burn itself out under controlled supervision. As a consequence of the continuing explosions and the associated safety risks, firefighting helicopters deployed to the area were withdrawn from operations.
The advancing fire is also threatening a communications tower located within the protected reserve. Dickes warned that the installation provides mobile network coverage for the entire Bad Kreuznach district, including emergency and rescue services, meaning that any damage to the facility could result in a significant technical disruption to regional communications. She further noted that the affected woodland is designated as a protected nature reserve and is currently under consideration for UNESCO World Heritage status. The cause of the fire remains unknown. According to Dickes, approximately 250 emergency personnel have been deployed near the municipality of Traisen to monitor and contain the incident. Following an initial evacuation on Saturday afternoon, authorities subsequently ordered the precautionary evacuation of large sections of Traisen as the fire continued to pose a potential threat.
According to the German Weather Service (DWD), the minimum temperature at Kubschütz in eastern Saxony remained at 29.4°C overnight into Sunday, establishing yet another national temperature record during the ongoing heatwave. The reading exceeded the previous record of 27.2°C, which had been recorded at Weinbiet in Rhineland-Palatinate on August 13, 2003, and now stands as the highest nighttime minimum temperature ever documented in Germany since official records began. The exceptionally warm overnight conditions underscored the persistence and intensity of the current heat event, as temperatures failed to provide their usual nocturnal relief.
The unprecedented nighttime warmth followed a succession of daytime temperature records established over the preceding days. On Saturday afternoon, the DWD measured 41.5°C at the Möckern-Drewitz weather station in Saxony-Anhalt, narrowly exceeding the 41.4°C registered shortly beforehand in Saarbrücken-Burbach. Both measurements surpassed the long-standing national record of 41.2°C that had been jointly recorded at Duisburg-Baerl and Tönisvorst on July 25, 2019. The sequence of increasingly higher readings reflected the sustained escalation of temperatures observed across large parts of the country.
Temperatures continued to climb on Sunday, with numerous monitoring stations already reporting values above 30°C before 8:00 a.m. The DWD forecast that eastern Germany would once again experience temperatures exceeding 40°C later in the day, while warning of widespread severe to extreme heat stress affecting many regions. Forecasts further indicated that thunderstorms expected at the beginning of the week would eventually bring cooler conditions, bringing an end to the most intense phase of the heatwave.
Water restrictions and rail disruptions
Growing concern over the prolonged period of extreme heat prompted renewed calls for water conservation and broader heat-protection measures. The German Association of Cities and Municipalities urged the public to reduce water consumption, arguing that irrigation of facilities such as tennis courts and golf courses should be avoided during the current conditions. The organization further warned that mandatory restrictions could become necessary should voluntary conservation efforts prove insufficient. At the political level, CDU parliamentarian Christoph Ploß argued that many municipalities remained inadequately prepared for future heatwaves while supporting the installation of public sunscreen dispensers alongside drinking water stations. He further maintained that greater investment was urgently needed in drinking fountains, urban tree planting, shaded public spaces, and air-conditioned facilities to strengthen local resilience during periods of extreme heat.
Rail operators likewise introduced precautionary measures in response to the exceptional temperatures. Deutsche Bahn and the Federal Association of Local Rail Transport advised passengers to postpone non-essential regional and long-distance journeys while confirming that previously booked tickets could be canceled without charge. In North Rhine-Westphalia, National Express temporarily suspended several services after determining that prolonged extreme heat created extraordinary technical challenges and increased the likelihood of trains becoming stranded between stations. The decision followed the evacuation of a regional express near Bonn on Friday after the train became unable to continue operating because of the weather conditions.
Preliminary DWD data indicated that Saturday produced numerous new regional and national temperature records across Germany. A weather station in the Jerichower Land district of Saxony-Anhalt recorded 41.5°C only hours after Saarbrücken had provisionally established a nationwide record of 41.3°C. Additional state records included 41.4°C in Waghäusel-Kirrlach, Baden-Württemberg; 41.1°C in Trier and Andernach, Rhineland-Palatinate; and 39.4°C in Hamburg. Together, these measurements illustrated the geographically widespread nature of the extreme heat affecting multiple federal states simultaneously.
Road networks under strain amid calls for long-term heat adaptation
The prolonged heat also resulted in significant damage to transportation infrastructure. Portions of the A2 motorway between Brandenburg and Saxony-Anhalt were temporarily closed, while speed restrictions were introduced on affected routes as a safety precaution. Additional damage was reported on sections of the A7 near Hamburg, the A93 in Bavaria’s Upper Palatinate, and multiple roadways across Brandenburg, demonstrating the broad impact of sustained high temperatures on critical transport networks.
According to Autobahn GmbH, elevated temperatures can soften asphalt surfaces while also causing cracking, rutting, uplift, or so-called concrete “blow-ups” on older roadways. The operator explained that roadway design normally accounts for thermal expansion; however, aging and repeatedly repaired concrete pavements may no longer be able to expand sufficiently, allowing internal stresses to accumulate until individual slabs are forced upward. Such failures affected the A2, A10, A11, A13, and A15 in Brandenburg, as well as the A93 between Weiden-Süd and Luhe-Wildenau, where lane restrictions are expected to remain in place until damaged concrete panels are replaced. On the A7 near Hamburg, traffic displaced a failed expansion joint, resulting in sections of the asphalt surface becoming detached.
Asphalt behaves differently from concrete when exposed to prolonged periods of extreme heat. Extended sunshine can raise road surface temperatures to well above 60°C, and when tropical nights prevent sufficient cooling, the bitumen within the asphalt softens and may migrate toward the surface, producing what highway engineers describe as “bleeding” pavement. Under continued traffic loading, these conditions can lead to rutting, surface deformation, heaving, and the formation of loose pavement fragments. Consequently, motorists were advised to remain vigilant, comply with temporary speed restrictions, and promptly report any visible roadway damage to the relevant authorities.
The heatwave also intensified the broader discussion surrounding Germany’s long-term climate adaptation strategy. Green parliamentary leader Katharina Dröge argued that cooling infrastructure would become increasingly essential in the coming years and called for a nationwide initiative to expand air conditioning in hospitals, nursing homes, schools, and daycare centers. She proposed linking public financial support for air-conditioning systems to the simultaneous installation of rooftop solar panels, maintaining that peak solar electricity generation coincides with periods of greatest cooling demand and would therefore help reduce operating costs. Dröge further argued that a portion of Germany’s special infrastructure fund should finance a rapid, low-bureaucracy cooling initiative and warned that inadequate cooling capacity in nursing homes could have fatal consequences during future heatwaves.
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