Although it may seem counterintuitive to apply sunscreen in the winter, when temperatures are below 30°F or colder, it is still necessary to protect the skin from sun damage. The sun’s ultraviolet (UV) radiation is the primary cause of skin damage and aging. UV radiation is present year-round and can penetrate through clouds and snow, making sunscreen a necessary precaution during the winter months. Up to 80% of the sun’s UV rays can pass through clouds. That means that even when the temperature is below 30°F and cloudy, your skin can still be exposed to UV radiation.
Snow can also reflect up to 80% of UV radiation, increasing the risk of sunburn and skin damage. This is especially true at high altitudes, such as when skiing or snowboarding. UV radiation is more intense in these environments and can cause sunburn or even skin cancer. Therefore, it is important to wear sunscreen even when it is cold outside.