When metal urban furniture sits in direct sunlight, it can indeed become too hot to touch comfortably. The temperature of metal surfaces can reach dangerous levels during peak sunlight hours, potentially causing discomfort or even minor burns upon contact.
Various factors influence how hot metal furniture gets. Dark-colored metals absorb more solar radiation than lighter shades. The specific type of metal matters too—aluminum generally heats up less than steel or iron. Ambient air temperature, sunlight intensity, and humidity all contribute to the final surface temperature.
On a typical sunny day with temperatures around 25°C (77°F), metal surfaces can easily reach 60-70°C (140-158°F)—well above the pain threshold for human skin. This heat retention occurs because metals are excellent conductors; they efficiently absorb and transfer thermal energy rather than reflecting it.
Many urban designers now address this issue through material selection and strategic planning. Powder coatings can help reflect some sunlight, while perforated designs allow better heat dissipation. Strategic placement under trees or incorporating shade structures significantly reduces surface temperatures.
For public safety, many municipalities install warning signs or alternative seating options in areas with metal furniture. Understanding these thermal properties helps communities create more comfortable and safer outdoor spaces for all users.