My mother would be ashamed at my unladylike language but this 'ere lady is no longer merely glowing, she's in a sweating puddle!
Years ago I did VSO in Nigeria and don't remember being this uncomfortable. And no, it wasn't dry fresh heat. South Eastern Nigeria is hot and humid.
What was different was the lifestyle. People got up early and did what had to be done then during the afternoon they took a siesta to be ready for another burst of activity in the evening. Houses were designed to keep the occupants cool with blinds and shutters. Trees were planted to provide shade.
Or maybe it was just that I was younger and better able to cope.