What could be more glamorous than a swimming pool at night? If you look closely at the light in the image above, you'll notice each little light dot is a star up close. This happens because I shot the image with a tiny aperture (yes, with a long shutter speed, too, because it was night). You can mimic this effect by looking at a light when your eyes are squinted.
Swimming at night is a wonderful Palm Springs past time, but it can only be done at certain times of the year. The months from June to September are best for a night swim. Temperatures are still hot until midnight--anywhere from the mid-90s to near 80, and sometimes higher.
In May and October, it's a bit too cold in the mornings to make the pool comfortable because the temperature can drop into the 60s. If it gets really hot during the day, then the pool will warm up, making swimming comfortable during the day.
Night swimming is far better the further south and east you go in the Palm Springs area. The north end of the city is very windy, making you cold whenever you get out of the pool (water evaporates, cooling the skin). The wind makes the water evaporate faster so you get cold quickly.
Finally, when you get into the pool on a warm summer night, it can be like a hot tub. Temperatures creep up to 110 degrees during the day, sometimes staying there until 6 p.m., without going down much until the wee hours of the morning. Many nights the temperature can be 99 degrees at 9 p.m. If you come to Palm Springs in the summer, one of the most enjoyable activities is a night swim.