Heat wave in Kassel: summer heat and the threat of thunderstorms at the weekend!
Kassel is expecting high temperatures and changeable weather with thunderstorms this weekend. Current weather warnings and forecasts.

Heat wave in Kassel: summer heat and the threat of thunderstorms at the weekend!
What is happening in the sky over Kassel? Today, July 18, 2025, there will be a mix of highs and lows with some pretty summery weather. Friday gets off to a rather changeable start, with temperatures between 24 and 26 degrees and isolated, light showers. But on the weekend the sun really shines through and brings us temperatures of up to 30 degrees. This is what the HNA reports.
On Saturday even hot temperatures of 28 to 31 degrees are possible and there will be mostly no precipitation. There could only be a thunderstorm in southwest Hesse on Saturday evening, but Kassel will be spared for the time being. On Sunday the stage is set for friendly weather that promises a pleasant break. But be careful! In the afternoon something will happen in the sky and heavy showers and thunderstorms can be expected. A certain potential for severe weather cannot be ruled out.
First storm warnings
However, the weather situation also brings with it certain risks. The Wetter.com page indicates warning levels that let us be on our guard for gusts of wind and strong thunderstorms. Warnings are issued at wind speeds of 50 km/h. With gusts exceeding 105 km/h, there is already talk of severe weather. There are also graduated warnings for thunderstorms, after a certain point it becomes much safer indoors.
We should be particularly careful with heavy rain, which in Kassel is considered warning level 2 from 15 l/m² in one hour. Such weather conditions could cause problems with traffic and outdoor events in the near future. A local political matter that might require an umbrella and rain protection on Sunday.
Upcoming events
Another focus is on a planned family celebration in an outdoor swimming pool in northern Hesse, which is still causing worry lines due to the weather forecast. There are currently only two children there, which raises legitimate questions as to whether the event can actually lead to the desired success.
The severe weather center continuously keeps its finger on the pulse of events with up-to-date information and provides an overview of possible severe weather warnings. The tireless meteorologists on this platform are active 24 hours a day and have the weather situation well under control so that we can stay up to date. With so much capricious weather, it will be interesting to see how the summer of 2025 will develop and whether we will have to continue maneuvering our way through the heatwave and thunderstorms. Maybe a good hand is still needed!