Contextual Vocabulary - Tepid Water

To Ratanbabu, the hotel seemed quite adequate. His room wasn't large, but that didn't matter. There were windows to the east and the south with pleasant views of the country side. The servant Pancha seemed an amiable sort. Ratanbabu was in the habit of bathing twice a day in tepid water throughout the year and Pancha had assured him that there would be no trouble about that.

In the given passage, the phrase "tepid water" means: