I moved to Korea and every year June, July and August I’m incapable to be outside because of the humidity. On the way to the convenience shop my underwear is already sweaty.
So I stay either in the office or at home running the AC all the time which doesn’t help with fighting the climate change.
You could go to sauna to get used to the heat, and cool yourself off in the cold bath. Sauna is generally awesome, and in Korea there are public saunas everywhere.