Have you ever reached for your outdoor trash can on a sunny day and been surprised by how hot the metal felt? You're not alone. Metal trash cans can indeed become too hot to touch when left in direct sunlight for extended periods.
The science behind this is straightforward. Dark-colored metal surfaces, common in many outdoor bins, are excellent at absorbing solar radiation. When sunlight hits the metal surface, the energy converts to heat, causing temperatures to rise significantly above the ambient air temperature. On a typical 85°F (29°C) day, a metal trash can surface can easily reach 130-150°F (54-65°C) - hot enough to cause discomfort or even minor burns with prolonged contact.
Several factors influence how hot your trash can gets. Dark colors absorb more heat than light ones. The material matters too - aluminum and steel conduct heat efficiently. Direct sun exposure duration and lack of breeze also contribute to higher temperatures.
This heat buildup isn't just a comfort issue. It can accelerate the decomposition of trash inside, creating stronger odors and potentially attracting more pests. The heat may also cause plastic bags to become more fragile.
To manage this, consider placing your trash can in a shaded area or investing in a lighter-colored model. You might also use gloves when handling the lid on hot days, or consider a plastic alternative if heat concerns you significantly. Some homeowners even create simple shade structures for their outdoor bins.
Regularly moving your bin between sun and shade throughout the day can help moderate temperatures. If you have young children or pets, being mindful of trash can placement becomes particularly important for safety.
Remember that while the metal surface cools relatively quickly once the sun sets or moves away, it can remain dangerously hot for some time after direct sunlight exposure ends. A quick test with the back of your hand can help you determine if the surface is safe to touch.