The Summer Heat

It was an unbearably hot summer. School was out, all the kids sat melting in their houses. The heat was so aweful most people had left town. Those left behind went on their normal life and simply brought a change of clothes or a towel when they went out. The heat however has stirred something else among the public, a strong desire to mate and sweat together~

This is a real simple prompt, but I'm basically wanting to do a extremely hot setting. A sweltering summer, where they sweat through their clothes and end up melting together. I'm open to most any pairing or combination of this with another idea. Please let me know!

Some Possible Variations: 

A/B/O-The world is filled with three types of people, Alphas, Betas, and Omegas. The Alphas are the strongest and control society, their overpowering scents and stronger bodies make them leaders. Betas are normal people, they have no scent. Omegas are sweet scented weaker members of society who rely on other for help but are prized as mates. Everyone has a unique scent, and go through mating cycles like animals do. Heats, Ruts, Etc.

The Winter Cold-The opposite of this prompt, its dead winter and people are freezing, perhaps we're locked in a cabin in the snow. 

Magic Sun-The sun's rays act as an aphrodisiac to those caught in it. 

Here's some pictures that got the idea into my head, I hope to play it out with you soon! (NSFW)