Yes, Azerbaijani Azizbekov Red Porphyry can be used for exterior applications in very rainy climates. This type of porphyry is known for its durability and resistance to weathering, making it suitable for outdoor use. It is also resistant to staining, fading, and cracking, which adds to its suitability for rainy climates. However, it is important to consider proper installation techniques and maintenance to ensure its long-term performance in any weather condition.