shb,
I really don't understand your question, so let's start over again.
You first asked the following question:
"What is the best season to go do a steam room"
I believe that you mean when is the best season to take a steam bath.
The season does not matter.
What matters is what results you want from the steam bath.
If you want to take a steam bath for stress reduction, promote the elimination of toxins, improve your skin tone, increase you heart rate, improve your circulation, strengthen the immune system or help clear up sinus problems, these are some of the results that you can get from taking a steam bath:
(
http://www.steamroomsplus.com/htmlpages/health.htm )
At the L Street Bath House in South Boston (
http://www.lstreetcurley.com/Lst.html ) for instance, one can take a steam bath and go jump into the freezing ocean in the middle of winter which is very envigorating, to say the least.
Why do you ask?
Thank you, very much.
Bruce Paine