Question

How hot is the radiante zone of the sun

Answer 1

From the core, energy moves to the radiative zone, where it bounces around for up to 1 million years before moving up to the convective zone, the upper layer of the sun's interior. The temperature here drops below 3.5 million degrees F (2 million degrees C). Don't know if this helped you but here ya go

Answer 2

3.5 million degrees F (Fahrenheit)
2.0 million degrees C (Celsius)
...really really hot