I'm not on the mainland and we have just had a very nice fairly cool July, only hitting 30C for one day. Hoping for more of the same august, and the 14 day forecast is showing max 30.
We got 44C a couple of years ago and it's really tough. The difference between 42 and 44 is amazing, it's like you have just gone over the body's ability to cool as breeze doesn't help anymore, you just have to stay wet or be a wimp and use aircon. My advice to deal with high temps on a regular basis is to secure your supply of water and get ground/tree cover, with an eye to fire resistant varieties - yucca, prickly pear, agave amongst the more woody and flammable trees.
I don't think spain is seeing temps that are particularly unusual, but the UK has just had a massive heatwave seeing temps in the low 30s C, which is very unusual there.