Well, yes, sun exposure can just lead to puffy eyes in some cases. So just be careful about it. As we know that when we go outside and have excessive sun exposure, it will just damage our eyes, leading to some eye problems, for sun light is too strong. And eye puffiness is a type of fluid build-up, which is also known as dropsy in the tissues around our eyes. At this moment, you should try ice compresses. According to some experts, cold tea bags can be very effective. Also, I will suggest you wear a pair of sunglasses when you go outside. And just be careful about the sun light, and it can just cause eye cancer too. By the way, allergies or infections can cause inflammation, leading to puffy eyes too.