The coldest I’ve felt in the Channel Islands was 49 and it bothered my fingers but not my face. For colder waters like NJ or Pa. in the winter or one dive in Labrador it feels like needles in the face until it goes numb! With age comes wisdom and I don’t do them anymore!
Cold water is the reason a lot of divers go to a full face mask but I have seen mask made from wetsuit material that limit the amount of water flowing around the face. They need to be trimmed to fit your mask and are probably a PIA to set up before a dive and could be a real safety concern if your mask gets dislodged during the dive. LP used to have one listed.