minted pea soup:
http://www.realsimple.com/food-recipes/browse-all-recipes/sweet-pea-mint-soup-10000001046889/index.html
cucumber soup:
http://www.realsimple.com/food-recipes/browse-all-recipes/cucumber-soup-10000001618555/index.html
I have a carrot ginger soup recipe that would probably be good cold.
I had a peach soup in Prague eons ago and it was yummy.
Salt & Pepper had a watermelon soup last summer that got good reviews from my MIL.
Vichyssoise, aka cold potato soup, is a classic, of course.
Thank you for reminding me of cold soups. An easy dinner option for the months ahead.