[Findecanor]

What about Japanese hot springs? ("onsen") Those are typically around 40°C but could be up to 60°C. Because it is hot water and not hot air the temperature would be transferred differently to the body though, so I don't think the numeric temperature is directly comparable.

Onsen baths are taken all year round: including summers that get hotter than in Finland, but especially enjoyed in winter.

[pezezin]

I am a Spanish guy currently living in Japan, and honestly I hate sauna but love onsen. Most on my Spanish colleagues seem to think the same. I guess the main factor being that both Spain and Japan are have really hot summers, so why would you get in a hot room to sweat like a pig when you are already sweating outside?