No idea. I measure mine by sticking my toe in it. I would imagine it's about 60 ish, which is screaming but not hospitalisation temperatures.
Mine is set by the traditional thermostat on a tank, which doesn't really set the temperature, rather sets the quantity of hot water. The temperature of the central heating is just short of seventy degrees, and of course that influences the temperature of the hot water. Although the tank is set to 53, I would say the top temperature is about 60 degrees. It varies a bit, of course, depending on how hot the cylinder was before the heating cycle started.