I’m somewhere between C and D.
I’m right there with** AFG**. Warm to hot at the start, getting used to it while I soap and shave, then as hot as possible for the last blast, then leap out and frighten the cats.
If its 90 degrees outside, then cool to medium.
*bolding mine
Now I know why the Messiah always has his hands inside his robe.
Blisteringly hot. So hot that Lady Chance insists on going first to shower because, while she likes lukewarm showers, the water heater won’t be capable of that for a while after I’m done. I have used, wastefully, I admit, all of the hot water our extra large heater has during some showers.
Call me a lobster and boil me, baby.
I wouldn’t be so sure - I’m a shower masochist. And I see from this thread I’m not the only one…
OK, let me put it this way–I’m a Messiah with traces of cat slobber and I’m sane. 
My water heater seems to be an on or off type thing, it is run by gas and requires a certain water flow to get it to turn on, that water flow then makes the shower too hot.
So I shower with cold water only. The actual shower temperature varies with the weather. Sometimes the cold water is quite hot itself, so that’s fine, other times it’s a bit cold, I deal with it.
F.
It just means I grew up in Japan.
I’m mostly between a D and an F, learning towards the F.
Fall/Winter/Spring: For my routine morning shower, around D. Hot but not extreme. For the shower over the weekend when I haven’t showered for a couple of days, or for a shower when I really want to get energized, F.
Summer: Lukewarm for the morning routine, lukewarm gradually changing to cold and ice-cold to cool down from the weather.
C-D. Although, given I consider D to be when I occasionally scald myself (hey, the red marks fade after a few hours), maybe my idea of “perfect temperature” is most people’s D to begin with.
I read it’s especially important on the face, and I’m trying to deal with my intense need for a very, very hot shower and my wish to stop boiling my face every day. So now I just stay in til the water gets lukewarm on its own and then do the face. 
I really don’t know anything about skincare or stuff like that, but I know an excuse to take a 20 minute shower when I see one.
(Does anyone know where to find a basic primer for folks who are totally lost in the skincare aisle? Google = a lot of people trying to sell me things.)
It means I hate waking up, but if I’ve got to do it, I want to get in a shower that’s as warm or warmer than the bed I left. By this means, I can slowly drift upward toward consciousness and be less annoyed when I go face the day.
Do you have “problem skin” at all? Like, oily or dry patches, irritation or inflammation? There are plenty of gentle skin cleansers for normal skin; try them out and see which ones your face likes. Seriously, I just sampled and over a couple of days could tell what felt good. Right now I use an off-brand version of Noxzema (in a similar blue tub) because it is a simple cold-cream type cleanser but Noxzema was a little too strong.
I am also the Messiah. I turn the shower on and let it run while I get undressed and any other minor thing I may need to do before stepping in, so I can test it before I allow my holy royal toesies to set foot in the tub.
My husband, however, seems to love it scalding, and has gone so blasphemously far as to call my temperature “cold”!
No way. I know cold. The building’s water heater broke down a couple weeks ago, and while waiting for it to be fixed, I needed to take a shower. I figured eventually my body would get used to the temperature. YOW! Ice cold! Hell, I’m into kinks as much as the next person who’s into kinks, but this had my arching my back away from the stream as though it were liquid fire, trying to at least get my hair washed and the soap rinsed off. I didn’t have a spare couple of years necessary to get acclimated to the temperature, so I just wove in and out of the stream, screaming. I stepped out of there shivering, covered in goose bumps, gasping for breath and angry as hell. But I was awake with no coffee.
Our apartment’s hot water heater was replaced 3 years ago. The new model, on hot-only, produces something that is only nominally a liquid (most of it turns to steam on impact) and raises actual second-degree burn blisters if you don’t dilute it.
I dilute it, but I’m still in D territory, and for a brief interval before I get out, I aim it at my back muscles and run in to F# zone.
Another Messiah. (Some of us must be wrong…[/Dire Straits])
cthiax, I recommend you go to this website and look up some of the recommendations. I will tell you that Noxzema contains several known skin irritants. I personally use Cetaphil skin cleanser.
Oh nice, she has a men’s skin care section. Actually, I do use Cetaphil now, so I guess I’m ahead of the game. I just don’t know about, like, exfoliators and moisturizers and all that metrosexual jazz. Thanks for the tip.
F! So hot everyone asks me “what the hell is wrong with you?” I’m a human heat sink. I’ve been in paradise ever since I moved in to an apartment with an infinite central water heater and a bathroom heater just like a hotel.
cthaix, you may also want to try nothing at all. I have great skin that rarely gives me trouble, but whenever I even think about putting soap on it, it freaks out. Fancy moisturizers and stuff of all types will screw up my face for a week. It’s a shame, because I’m a total make-up slut and the industry could probably make fortunes if I could use their overpriced snake oil. But alas, it’s nothing but a splash of water for me.
D leaning towards F here. Which can cause problems, because my beloved Bluesman and I shower together most mornings, and he’s more of a B to C kinda guy.