The ultraviolet intensity of the sun in winter

Relatively weak. The intensity of ultraviolet rays in winter sunlight is obviously related to the season, which is quite different from that in summer, but it does not mean that there is no ultraviolet rays in winter. The ultraviolet intensity is 70% on cloudy days and 40% on cloudy days. Therefore, although the ultraviolet intensity in winter is weak, it still exists. If you don't take proper sun protection measures when you go out, your skin will still be hurt.