The desert in the North of Chile is the driest desert in the world. It receives less than .01 cm of rain per year. Oddly enough, I had the chance to swim in the desert 3 times while I was there. Below, you can see a friend and me in a hot spring. The outside temperature was -9°C (16°F). We had to walk across streams of ice to get into the thermal spring. The water temperature was around 24°C (75°F). To give you a better idea of how cold it was, after drying off, I set my towel down to dry in direct sunlight before we left and it froze in about 4 minutes.