Yes, Turkeys Vanilla Travertine can be used for exterior applications in very humid climates. Travertine is a durable and natural stone that is often used for outdoor projects such as patios, pool decks, and facades. However, it is important to note that the stone needs to be properly sealed and maintained to withstand the moisture and humidity levels in a humid climate. Regular cleaning and sealing can help prevent any potential damages or discoloration that may occur over time.