The last week was like early summer in Germany. Temperatures reached 30°C in some parts (86 degree freedom):

Log-Data for last week:

In these warmer days they have more "trouble" keeping a constant temperature but they try their best. When the outside temperature peaks to >40°C in direct sunlight, the hive temperature (on top of the combs anyway) peaks too.

I put the void sensor directly into the hive now, between two combs.