are there such places on earth where people live? I live in India and haven't come across such :-)
Death Valley, California. I tried swimming in a pool there once and it was like swimming in a jacuzzi.
Far North Queensland is one I've been to.
Swimming in a concrete/Pebble Tec pool in Cairns in the summer is akin to taking a warm bath...
In Phoenix AZ, July/Aug/Sept pool parties are often BYOBOI (bring your own block of ice). Everybody brings a 10 lb. block of ice to throw in the pool and within an hour it's cool enough to enjoy, even in the 115F heat.