Possibly racist, certainly a generalisation, but don't the best brains and the most artistic types come from countries that have a cold winter?
Personally, I don't function well in heat, dry or humid makes no difference. I hate the heat.
In the British colonies of India, Ceylon and Malaya, the well to do could escape the heat to the mountains where it was cooler. I don't know about Africa. The French colony of what is now Vietnam had the same, with accommodation for the French and the local rich people high in hills where it was cooler. Not sure about Laos and Cambodia.
But don't the world's best scientists, the best painters, the best authors, the best sculptors, the best architects etc etc all come from Western countries where there is a cold winter?
Of course I am suggesting this as a Western person who knows more about Western civilisation than I do about any other but I am quite firm in my opinion that the best brains come from countries that have a cold winter.
The hill station of Simla in India was a deliciously cool place for the English in the time of the Raj and not a gum tree to be seen. They had to go there to recalibrate their heat affected brains.