That's an excellent and very practical question! I've wondered the same thing myself when I see those shiny bins sitting in a park or on a sidewalk on a blazing summer day. The short answer is yes, metal trash cans can get quite hot to the touch when placed in direct, prolonged sunlight. However, whether this is a major problem depends on a few factors.
Metal, especially darker colors like black or forest green, is an excellent conductor of heat. It absorbs solar radiation efficiently, causing the surface temperature to rise significantly—sometimes enough to be uncomfortable or even painful to touch. This is a genuine consideration for public spaces where people might accidentally lean against them.
But here's the thing: manufacturers of quality outdoor bins are aware of this. Many are designed with this in mind. You'll often find that the metal used is coated with a heat-resistant, powder-coated finish. This doesn't stop it from heating up, but it helps protect the material from degrading and can sometimes slightly moderate the temperature transfer. The heat is also usually concentrated on the surface and lid. The inside of the bin, especially if it contains bagged waste, doesn't typically reach the same extreme temperatures.
There are simple solutions if you're managing a bin at home or in a community space. Placement is key. Installing the bin in a partially shaded area, under a tree or an eave, makes a tremendous difference. For public works departments, choosing lighter-colored metals (like beige or light gray) can also reduce heat absorption compared to dark colors.
So, while metal bins do get hot, their durability, resistance to pests and weather, and overall longevity often outweigh this thermal downside. With a little thoughtful placement, the issue is very manageable. It's a good reminder that for public bins, a small "Caution: Surface May Get Hot in Sun" sign isn't a bad idea!