How do you explain the sensibility of the virus at high temperatures and his survival in tropical countries?

Although we have information from viruses similar to SARS-CoV-2 experts have said there is no established correlation between the variations in weather temperature and spread of COVID-19. For older flu viruses is known that they typically grow and reproduce in cold and dry conditions. They do not reproduce well if the temperature is warm. Their proliferation goes down at 30 degrees Celsius.