hot as blazes

(as) hot as blazes

Extremely and uncomfortably hot. On summer days in Texas, when it's hot as blazes outside, there's nothing quite like a tall glass of sweet tea. I hate working in the theme park during the summer, because it's as hot as blazes in the costumes they make us wear.
See also: blaze, hot
Farlex Dictionary of Idioms.

hot as blazes

Also, hot as hell. Extremely warm, as in It was hot as blazes in that room, or I'm hot as hell and would love a cold shower. The first of these hyperbolic similes dates from the mid-1800s, the second from the early 1900s.
See also: blaze, hot
The American Heritage® Dictionary of Idioms by Christine Ammer.
See also:
  • (as) hot as blazes
  • (as) hot as fire
  • hot as fire
  • (as) hot as the devil
  • (as) hot as the dickens
  • dickens
  • (as) hot as hell
  • hot as hell
  • hot enough to burn a polar bear's butt
  • red hot