The ultraviolet light emitted by the sun that we encounter daily outside will not kill this virus. This fact is confirmed by the International Health Organization and also by the fact that the COVID-19 virus occurs in the southern states.
However, sunlight in space has three classes of rays: A, B and C. UV-A rays are not life-threatening and we can thank them for a beautiful summer tan. UV-C and UV-C rays do not enter our atmosphere as they are trapped by the ozone layer of our planet.
Ultraviolet rays type C (UV-C) have long been used to eradicate viruses and bacteria in healthcare. The special lamps that emit these rays kill 99.9% of all bacteria and viruses.
COVID-19 can also be exterminated with these lamps. More information on this issue can be found at
https://www.livescience.com/uv-light-kill-coronavirus.html