"Mad Dogs And Englishmen" by Noël Coward (1932)
In tropical climes there are certain times of day
When all the citizens retire
To take their clothes off and perspire
It's one of those rules the greatest fools obey
Because the sun is far too sultry
And one must avoid its ultry-violet ray
The natives grieve when the white men leave their huts
Because they're obviously, definitely nuts!
Mad dogs and Englishmen go out in the midday sun
https://genius.com/Noel-coward-mad-dogs-and-englishmen-lyric...
If you have water at the wet bulb temperature exposed to ambient air, then evaporation and condensation are in equilibrium. Above the wet bulb temperature, there is more evaporation, transferring heat from the water to ambient air. Below it, there is more condensation, transferring heat from ambient air to the water.
Except at 100% humidity, this is higher than the dew point, which is the temperature where water spontaneously condenses out of the air.
Dunno about being in the sun, but if you don’t have AC and the house is at ambient temp you might as well be outside (normally in the shade) as you’ll at least get some air.
Depending on design, houses can be above ambient outdoor temperature without AC
If you don't have AC there are things you can do to your home keep the temp low through the day. You essentially trap the cooler evening air and keep the sun out.
That's the normal way to do it, but it doesn't work when there's no wind and air temp doesn't cool down significantly at night. Even fans throughout the dwelling don't end up cooling that much overall, because they really only move the air that's in their path (unless you already have ceiling fans to create larger turbulences and better mix the air).
I mean I watched people in Canada in the news this morning and thought, why are they still outside in the sun even?