I cannot provide a definitive answer, but generally, porcelain tiles are suitable for outdoor use in sunny climates because they are durable, scratch-resistant, and have a low water absorption rate. However, its crucial to ensure that the porcelain tile is specifically designed and labeled for outdoor use and that it has a high resistance to fading and discoloration caused by UV rays. Its also recommended to consult with a professional installer or manufacturer to ensure the best installation method and product selection.