The radiative zone of the Sun is incredibly hot, with temperatures ranging from approximately 2 million degrees Celsius (3.6 million degrees Fahrenheit) at the outer edge to around 7 million degrees Celsius (12.6 million degrees Fahrenheit) near the core.

It's important to remember that these are just estimations, as it's impossible to directly measure the temperature within the Sun. These figures are determined through sophisticated models and observations of the Sun's emitted radiation.