When I left my job and was gymless for a short period, I started running along the water in San Francisco after not having run for several years. Within two weeks, I was doing about ten miles. It's really hard to overestimate how much easier and more pleasant beautiful surroundings make walking and running. (Temperate weather 365 days a year doesn't hurt either).
Running barefoot outside---if you can either find a good place for it or the courage to declare your current place good enough, is a thing of joy.
(My current home, London, basically has temperate weather all year round. It doesn't really get cold here.)
Humans have sweat! We we're built for the heat! We can survive just fine in the arctic too. We're the most adaptable species on Earth.
You have to get in shape, but that's another issue...