1. When the water is ......... take the bath.
2. Tea is ......... now, drink it.
I think lukewarm and tepid are used to show disapproval but I need some adj.s to show approval.
I think for a normal condition there should be an adjective. Don't you use an adjective and make a sentence always to say it is not hot or not cold?
I think it's acceptable to say:
1. The water/tea is good now, not hot not cold.
At least you could say good or moderate for an informal use and normal for a formal use. Am I right?