So in Star Wars: The Force Awakens, Finn survives the crash of the TIE Fighter on Jakku.
He's alive, he's shaken, and he's also drenched in sweat. He is only able to retrieve Poe's jacket from the wreckage and he's ditched his Storm Trooper outfit as much as possible, both to avoid appearing like a Storm Trooper but also, I have to assume, because it's really hot and that can't be comfortable
When he gets to the village he's now wearing the jacket
I don't understand why he put on the jacket. I mean, I get the plot reason - BB-8 needs to recognize something from Poe to move the plot forward - but it's a million degrees outside. He's still sweating profusely in the jacket in a later scene
If it's oppressively hot outside why would you put a jacket on to begin with? Just to blend in? Maybe I'm a huge wimp but it seems to me that ditching the jacket to begin with would have been the more logical move.
Later in the movie he's in environments that aren't deserts, and even the snowy surface of the Starkiller base, so I guess it's good he kept the jacket but is there a reason other than plot convenience to have donned the jacket on Jakku?
Note that I may be overthinking this because I just went through a record summer of heat in Texas...