Yes, Italys Sarntal Green Porphyry can be used for exterior applications in hot climates. This natural stone is known for its durability and resistance to weathering, making it suitable for use in various climates, including hot and sunny regions. Its composition and characteristics make it highly resistant to heat, UV radiation, and color fading, which are common challenges in hot climates. Additionally, Sarntal Green Porphyry has a low water absorption rate, which helps to prevent damage caused by moisture and extreme temperature fluctuations.