5 Reasons Clouds Won't Protect Your Skin From UV Damage
Up to 80% of UV rays penetrate clouds You still burn, age, and increase cancer risk on overcast days. Overcast does not mean safe.
UVA rays barely care about clouds UVB rays are reduced slightly, but UVA rays—which cause aging and cancer—pass through clouds almost unchanged.
Bright overcast days increase diffuse UV exposure Clouds scatter UV rays from all directions, like being inside a softbox. This can actually increase your total UV exposure compared to a clear day.
Snow and water make UV worse by reflection Reflective surfaces like snow or water bounce UV rays back at you, amplifying exposure even under clouds.
Sunscreen is needed every day, cloudy or not If you are outside for more than 10–15 minutes, apply sunscreen daily. Your future skin will thank you.