That's an excellent and very practical question! The short answer is a definitive yes, metal park benches are almost always colder (or hotter) to sit on than wooden benches when you first touch them. But the reason isn't that the metal itself is at a lower temperature—it's all about thermal conductivity.
Think of it this way: on a chilly morning, both the metal and wood bench have been outside all night and are roughly the same temperature as the cold air. When you sit down, your body is much warmer. The key difference is how quickly each material *steals* that heat from your body.
Metal is an excellent conductor of heat. It rapidly pulls thermal energy away from your skin to try and equalize the temperature. This fast heat transfer is what your nerves register as "cold." Wood, on the other hand, is a natural insulator. It conducts heat very poorly, so it draws warmth from your body much more slowly. The surface right under you warms up a little faster, making it feel less harsh initially.
This principle works in reverse on a scorching summer day. A metal bench left in the sun will absorb solar energy and become extremely hot, transferring that heat *into* your skin painfully quickly. A wooden bench will also get warm, but its insulating properties prevent it from reaching the same extreme temperatures or transferring heat as aggressively.
So, for comfort across seasons, wood generally wins. However, metal benches offer advantages like durability and minimal maintenance. A good tip for any bench is to check it with the back of your hand first! Understanding this simple science can help you choose the perfect spot for your next park rest.