Malaga Marfil Porcelain can be used for exterior applications in very humid climates. Porcelain is highly durable and water-resistant, so it can withstand moisture and humidity without warping, cracking, or deteriorating. However, it is important to ensure that the installation is done properly and that the manufacturers recommendations for outdoor use are followed. This may include using certain adhesives or sealants designed for exterior use and providing adequate drainage for the tiles. Additionally, regular maintenance and cleaning may be needed to prevent the buildup of mold or mildew in humid environments.