The best time to swim in an outdoor pool is in the morning and evening hours. From 7:00 to 11:00 the water remains fresh and the sun is not too active, which reduces the risk of overheating and sunburn. In the evening, from 16:00 to 20:00, the water temperature is comfortable and the level of ultraviolet radiation decreases. During the day, it is recommended to use sunscreen and a swimming cap for protection from the sun.