The short answer is yes, dark-colored urban outdoor furniture can become significantly hotter than lighter alternatives when placed in direct sunlight. This is a critical consideration for public spaces, parks, and urban plazas where user comfort and safety are paramount. The science behind this is rooted in a principle called albedo, or solar reflectance. Dark surfaces have low albedo, meaning they absorb a high percentage of solar radiation (visible light and infrared) and convert it into thermal energy, heating the material itself. Lighter colors, with high albedo, reflect more of this energy away.
The extent of heating depends on several factors beyond color. The material composition is crucial. Metals, like powder-coated steel or aluminum, are excellent conductors of heat and can reach scalding temperatures quickly. Dense plastics and composite woods also absorb and retain heat effectively. In contrast, natural woods like teak or ipe, while still affected by color, may feel less intensely hot due to their lower thermal conductivity. Environmental conditions such as ambient air temperature, humidity, and wind also play a role.
For urban planners and designers, this presents a challenge. While dark finishes are often chosen for aesthetic reasons, modernity, or to hide dirt, they can render seating unusable during peak sun hours, defeating their purpose. Solutions include strategic placement in shaded areas, selecting materials with inherent thermal properties (like certain composites designed to stay cooler), or incorporating light-colored fabrics or slats on seating surfaces. Ultimately, prioritizing thermal comfort alongside durability and design is key to creating successful, people-friendly urban outdoor spaces.