Yes, solar lights are waterproof and should still work even if it rains or snows heavily. Understanding the difference is crucial when choosing the right lights for your outdoor space. In this article, we'll dive into the waterproof capabilities of solar lights, what to look for when. . Generally speaking, solar lights should be water-resistant and stand up to average amounts of rain but you may want to bring them in during severe storms. Look for an IP rating, which shows how well they resist moisture. True Lumens stands out in. .