Mexican Terracotta can be used for exterior applications in windy climates but it may require additional protection and maintenance. Terracotta is a porous material which means that it can absorb water and be prone to cracking and breaking in extreme weather conditions such as strong winds. To prevent this, a protective coating or sealer should be applied to the surface of the terracotta to help protect it from water penetration and freezing temperatures. Additionally, it is important to ensure that the terracotta pieces are securely anchored or fastened to the surface or structure to prevent them from being blown away by strong winds. With proper care and maintenance, Mexican Terracotta can provide a beautiful and durable addition to any exterior application in windy climates.