How to Take a Luxurious Bath 1) Test the waters. "Ideal water temperature for a warm bath is 92 degrees Fahrenheit. ... 2) Set the scene. "Bright bathroom lights tell your body its go-time, not bath time. ... 3) Add an oil. ... 4) Stay hydrated. ... 5) Don't ruin a great bath with a bad robe. Dec 5, 2014