MAX HD2 overheating

I currently have 3 Max HD2 domes installed onboard yacht in Dubai. I initially had antennas installed outdoors however within 1 day one unit had failed. I am worried to reinstall them back outside incase it was the temperature causing the failure. The average outdoor temp is 44°C however this would increase in direct sunlight. Does anyone have the Max HD2 domes installed in this type of climate and if so are there any issues.