Yes, Stone Honeycomb Panels can be used in exterior applications in hot climates. They are highly resistant to weathering and provide excellent insulation, which makes them suitable for use in high-temperature environments. Additionally, the panels have a high strength-to-weight ratio, which means they can withstand severe weather conditions without compromising on performance. However, it is important to choose the right type of stone and finish to ensure that the panels can withstand the extreme heat and UV radiation. It is also important to ensure proper installation to guarantee long-lasting performance.