Quote:
Originally Posted by Acajack
Another thing is that the world's biggest cities have variable coldness in winter, but you have to get pretty far down the list to find a city that does not average over 20C for a max in mid-summer.
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Well, I don't think the area of the world that's under 20C in summer as a max is that populated to begin with. They're often either boreal climates or really oceanic climates far from the equator (eg. northern British Isles, Iceland etc. with some outliers farther south like northern California etc. though a place like Eureka, CA is only a small city), or highland climates (like La Paz, Bolivia).
I'm sure part of this is also that agricultural production is far less in places with cool summers. You can still grow lots of crops in places with cold winters, if you have a solid few months of warm summer. But a cool summer growing season (even if it has mild winters to extend the growing season) probably is challenging (potatoes can probably work though in some of these climates, plus you can have grazing since grass can grow). The amount of food produced likely wouldn't be high. Of course, nowadays, cities don't have to be near agricultural areas, but historically it makes sense why these areas have lower populations.