But anecdotal evidence isn’t very convincing. I’ve had the opposite experience; found being in Greek and Spanish houses during a heatwave way more tolerable than UK ones, even without AC. Idk about Germany but some older Czech houses feel like ovens when it gets too hot. Lovely for winter though.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10199188/
Found this paper ^ Haven’t read it yet though
I think you may be partly right
But anecdotal evidence isn’t very convincing. I’ve had the opposite experience; found being in Greek and Spanish houses during a heatwave way more tolerable than UK ones, even without AC. Idk about Germany but some older Czech houses feel like ovens when it gets too hot. Lovely for winter though.