The system, called “Quendeline,” will also bring thunderstorms and showers as the week goes on, but after Thursday the summer heat will be slightly less intense for a while, the DWD said.
Tuesday's forecast called for widespread sunshine with highs between 26 and 33 degrees, with similar weather expected for Wednesday morning.
But as the day wears on, cloud cover will build in the west, with showers and thunder storms forming by afternoon. This could cause severe weather conditions with hail and gale force winds in isolated locations, the DWD said.
The rest of the country will remain sunny, but extremely humid with highs reaching between 27 and 35 degrees.
Thursday will see more rain in western and central regions, with more severe conditions possible. Meanwhile eastern Germany will remain sunny with temperatures between 26 and 35 degrees, the DWD said.