Swimming pool water temperature doesn’t change by chance. It is significantly influenced by daily weather conditions and the amount of sunlight that your pool receives. You should understand the following factors to maintain comfortable swimming conditions, extend the swim season, and make smarter heating decisions. How Does Sun Exposure Affect Solar Swimming Pool Heaters? Sunlight is the most powerful natural source of pool heating. When sunlight hits the pool surface, the water absorbs solar energy and warms up gradually. Pools that receive direct sunlight for most of the day often stay warmer than shaded pools. There are several factors that can affect how much heat your pool gains from the sun: Pool orientation Surrounding trees or buildings Pool surface color and material Dark-colored pool finishes absorb more heat, and lighter finishes reflect sunlight. So, the pools with limited sun exposure often experience cooler and less stable water temperatures. How Air Tempera...