The German Weather Service (DWD) predicts moderate maximum temperatures between 26 and 31 degrees Celsius for most of the country, while the Upper Rhine region may experience highs of 33 degrees Celsius. Coastal areas are expected to see temperatures rise to 30 degrees Celsius. The DWD warns that the night preceding Thursday will offer little respite from the heat, with urban centers potentially remaining at around 22 degrees Celsius. Concurrently, severe weather conditions, including thunderstorms and heavy rainfall, are anticipated. France is also bracing for extreme temperatures, with forecasts suggesting highs of up to 40 degrees Celsius, raising health concerns as previous heatwaves have resulted in significant mortality rates.