Student or Learner
Does "social temperature" mean "social atmosphere"?
ex)We are fortunate that in such a large office we all get along so well. You are one of the colleagues who keep the social temperature at such a comfortable setting....
I've not heard the phrase before either, but I agree with how you and CS have interpreted it. You might call such an atmosphere (social temperature at a comfortable setting) "congenial".
not a teacher