I suffer in hot summers because I have no air conditioning or even just ceiling fans, but I'm right under the roof, so if it is just 25°C outside with sun it is much hotter inside and it becomes unbearable if it is over 30° outside. The average summer high here is more like 21°C, so it's not bad if summers are regular, but we are having more and more really hot periods (well hot for here not Australia, obviously *lol*) in recent decades due to climate change. So that sucks.