June's record temperatures a "watershed" for Germany as heat stress reaches Mediterranean levels

The prolonged heatwave that led to new temperature records in many European countries in June 2026 has created a heat stress situation in Germany that, in Europe, was so far common in Mediterranean countries, Germany’s Meteorological Service (DWD) has found. In terms of daily averages and maxima, Germany is joining countries like France, Greece, Italy and Spain, “facing similar adaptation pressures in particular with regard to heat protection,” DWD said. 

Germany was leaving a “comfort zone” in which health protection from heat was focussed on vulnerable groups, and would have to prepare for adaptation measures previously required only in southern Europe, the DWD concluded. “This is a watershed for climate adaptation in Germany.” Human greenhouse gas emissions were laying the groundwork for this shift in climatic conditions in Europe, the DWD added. 

The heatwave in the second half of the month hit large parts of southwestern and central Europe, with temperatures repeatedly surpassing 40 degrees Celsius and new daily records in countries such as France, Germany and Poland. DWD said the officially confirmed new record for Germany was reached in Möckern-Drewitz in eastern state Saxony-Anhalt on 27 June. With 41.8 degrees Celsius, the previous 2019 record of 41.2 degrees was broken by an “impressive” 0.6 degrees, the meteorologists added. 

The high-pressure system lingering over parts of Europe at an unusually early time of the year not only led to higher peaks but also caused daily mean temperatures, including overnight, to be “significantly above usual June levels,” DWD said. In Germany, the mean temperature over a 24-hour period on 27 June reached an  “all-time high” of 28.9 degrees. The absence of a nighttime cool-down in many regions further increased the heat stress on people and the environment, the meteorologists said. 

Many Germans are now turning to air conditioning (AC) systems to help during heat waves. Close to a quarter of Germany’s households are now equipped with AC units, according to a representative survey by price comparison website Verivox. Twenty-three percent of households said they use air conditioning at home, five percentage points higher than last year. Meanwhile, twenty-five percent of respondents said they plan to buy one, compared to 14 percent a year ago. The majority of households (52%) said they neither use nor plan to purchase an air conditioning unit, yet the share dropped from 68 percent in 2025. 

“The extraordinary heat wave of the past few weeks has significantly increased interest in air conditioners,” said Thorsten Storck, energy expert at Verivox. “At times, portable air conditioners were sold out in many places.” Portable air conditions, which are cheaper and easier to set up, make up the majority of units at 69 percent. Permanently installed systems, which are more expensive but more energy efficient, constitute the remaining 31 percent. 

Germany has seen over 5,000 heat-related deaths this year, most of them in June when the record-breaking heatwave happened, according to the Robert Koch Institute. Earlier that month, the German Medical Association said Germany was "insufficiently prepared" for extreme heat, and healthcare associations have previously called for money for the implementation of effective cooling systems.

The record temperatures in June also reignited a debate over climate adaptation funding in Germany. Municipality representatives have called for the introduction of a so-called “joint task” for climate adaptation in Germany's constitution, which would ensure the federal government and states contribute to financing for the task on a permanent basis.