For you guys that take hot baths. What is the max temp you find comfortable and safe?

I know this is individual specific and has a lot of factors. But I am young and am generally healthy, keep fit, etc.

I really like to take relaxing baths. But I find if the temp is too low, its not fully relaxing and satisfying.

For example: I usually set the temp to around 101-103F (38-39C).

I have heard that 103F is the upper limits of safety recommendation when it comes to hot baths and hot tubs. But I have got hotter before, like 105F, and it feels really nice and relaxing. The problem is the dizziness after and sweating.

What is the max you have done and why?

Thanks