While there are lots of good reasons to get sun for mood, the sun’s rays do have ultraviolet (UV) radiation. The sun’s rays can penetrate the skin and damage cell DNA. This can lead to skin cancer.
Defining an excess amount of sun exposure depends upon your skin type and how direct the sun’s rays are. Fairer skinned people typically get a sunburn more quickly with sun exposure than others who are darker skinned. Also, a person is more likely to get a sunburn going outside when the sun’s rays are more direct. This usually takes place between 10 a.m. and 4 p.m.