Thermonuclear is extremely hot and can reach temperature of around 180000032 F or 100 million degrees Celsius.
A thermonuclear weapons center during peak energy output reaches 180000032 F which is significantly much hotter than even the core of the Sun.
The core of the Sun is around 15 million degrees Celsius or 27 million degrees F.
The temperatures that are generated by thermonuclear explosions are extremely high and exceed the temperatures that are found at the center of the Sun.
Thermonuclear weapons use nuclear fusion, which is a process that requires extremely high temperatures as well as extremely high pressures to initiate.
This extreme heat is sustained for a very short period of time and often is measured in milliseconds, as the explosion rapidly expands and cools down.
And a significant portion of the energy that is released in a thermonuclear explosion is in the form of thermal radiation, which causes intense heat as well as fires.
Thermonuclear Godzilla in Godzilla which was the King of the Monsters was extremely hot, with estimates ranging from 500,000 degrees Celsius to potentially millions of degrees.
The heat of the thermonuclear Godzilla was enough to instantly melt steel and concrete, and his pulses were powerful enough to incinerate Ghidorah.