It's been raining for most of the last two days in Bohemia but not in Moravia. It's absolutely dry here and quite fucking hot.
It's 27C inside and even though it's supposedly 20C the temperature inside isn't dropping despite having every window and door open. How are we supposed to sleep? 
@matrix if your wall material is concrete and bricks they store the energy of the sun for days. Same happens to my house. You must thermally insulate the house from the outside, especially the concrete junctions that "seep" the heat indoors. Then deal with air circulation, if your bedroom e.g. is facing south, you need to circulate air inside so you don't boil in your sleep. Also, photovoltaic panels on the roof if you have one are great at sucking in the heat.
