Perus Exotic Lucce Travertine can be used for exterior applications in very humid climates. However, it is important to note that travertine is a natural stone and may require additional care and maintenance in high humidity conditions. The stones porosity and the humidity levels can lead to moisture absorption and potential discoloration or damage over time. To prevent these issues, proper sealing, regular cleaning, and maintenance should be implemented to ensure the longevity and beauty of the stone in humid climates.