I do feel stupid for feeling this. India is currently on fire and also flooding iirc, by contrast here in 
it's not much hotter than recent years. I am lucky enough that we have a portable AC to run in the bedroom.
It's not the literal heat, our room is an ok temp honestly. But the heat seems to be breaking down my joints and bones, I feel like a decrepit corpse weighted with lead rn. This is the first time I'm feeling this too, didn't happen last year so my body is maybe decaying again.
I think it's heat exhaustion, I am making sure to drink and stuff but I just feel sluggish and sore, I am scarfing ibuprofen to little avail. Weh!
Normally I love 27°C weather, but when it's humid it often feels hotter and the air feels muggy, which absolutely sucks. Not sure if this helps or if you'll have access to it, but I grew up in the tropics and my parents used to make chrysanthemum tea and barley water to cool us down and keep us hydrated. Another thing I got from my parents was not to drink water that's too hot or too cold to avoid your body going into shock. Not sure how scientific that is but it's "age-old wisdom" I guess...
But other than that, cool showers twice a day (or three times a day, if it's particularly muggy), and maybe carrying around a portable mini fan if you're moving around a lot.