You guuuys I just looked at the weather report for next week and we're supposed to have highs of 26 degrees C/79 F. I. Help! I don't know how to deal with heat waves! I'm going to melt away and die!

And yes, 26 C is definitely a heat wave for where I live - in the last week it didn't get above 17, and that's pretty much normal summer weather. I don't think I've experienced anything above low 20s since going to Istanbul last summer.
As the Buddha replied when asked how one could escape the heat of the sun, he advised why not crawl into the burning furnace?
Today we have a high of 77 F/ 22 C, with a humidity of 59%. This is down from 94 F/ 34 C on Monday, Tuesday, Wednesday with nearly identical humidity. I am of predominantly Northern European heritage, so I too am well-adapted to colder climes and hate this heat.
If it is of any consolation, I would much rather endure your state.