Yes, Portugals Marron Monchique Granite can be used for exterior applications in very windy climates. Granite is a durable and hard natural stone that is resistant to weathering and wind damage. It can withstand the harsh elements and is commonly used for outdoor applications such as building facades, paving, and cladding. The Marron Monchique Granite specifically is known for its durability and weather-resistant properties, making it a suitable choice for windy climates. However, it is always recommended to consult with a professional stone supplier or architect to ensure the suitability of the specific granite for the intended use and environmental conditions.