Metal sculptures placed in direct sunlight can suffer from overheating, leading to structural damage, discoloration, or even safety hazards. To mitigate these risks, consider the following methods:

1. Choose Heat-Resistant Materials: Opt for metals like stainless steel or bronze, which have higher heat tolerance. Coatings such as heat-resistant paint or ceramic finishes can also reflect sunlight and reduce heat absorption.

2. Install Shading Structures: Position sculptures under pergolas, awnings, or trees to block direct sunlight. Temporary shade sails are another flexible option for seasonal adjustments.

3. Use Reflective or Light-Colored Finishes: Light-colored or polished surfaces reflect more sunlight, minimizing heat buildup. Regular polishing maintains reflectivity.

4. Ensure Proper Ventilation: For hollow sculptures, incorporate ventilation holes to allow heat to escape. This prevents internal heat accumulation.

5. Regular Maintenance: Inspect sculptures for cracks or coatings wear, which can exacerbate heat damage. Reapply protective finishes as needed.

6. Water Cooling Techniques: In extreme climates, misting systems can cool sculptures during peak heat hours, though this requires careful planning to avoid water damage.

By combining these strategies, artists and collectors can preserve metal sculptures' integrity and appearance while keeping them safe under the sun.