Yes, United Kingdoms Doddington Sandstone can be used for exterior applications in very rainy climates. Sandstone is a naturally durable and weather-resistant material, known for its ability to withstand moisture and water. Furthermore, Doddington Sandstone specifically is well-suited for exterior use due to its excellent water absorption characteristics and low porosity, which help prevent water damage and deterioration. However, it is always advisable to consult with a professional architect or stone specialist for specific recommendations and proper installation techniques to ensure the best performance and longevity in a specific climate.