Zu hohe Temperatur?

Not really. Depends on your grow set up and how you intent to water it for example. High temps mean you must have real good extraction good airflow and more watering. If you can afford this high maintenance and have strains that do well in hot climates you can manage if not best to have lower temps like 22ºC-27ºC. Root temps cannot drop below 15 to work but above 23 you get the risk of root rot much easily. Hope this helps. Feel free to use the chat for further help ;)