As solar panels are designed by nature to be exposed to the air, they are at the mercy of the elements, which can potentially result in damage. With this in mind, solar panels are generally tested against a wide range of environmental effects such as high temperatures, hailstones, corrosion from salt mist or ammonia, and more.
When choosing solar panels, keep your own local environment in mind and think about what sort of conditions they will be exposed to. There are different weather effects by the seaside compared with living in an area known for extreme heat.
Check the product specifications when picking out solar panels. These will tell you how they have been tested and certified against weather that could damage them over time.