"Ah yes, diurnal creatures." He says distractedly like he's trying to fix it in his memory. He knows that, he just wasn't considering it.

There's the shuffle of clothing as he slips out of his leather robes before sinking into the water. Being able to levitate allows him to walk over the surface of the spring and then slip down into the water with barely a splash. He puts his arms on the edge of the rock behind him to support himself, giving a hum of pleasure as he acclimates to the warmer water.

"This is one of the few things the surface of my world does correctly. We don't have hot springs in the Underdark."

He's just going to close his eyes and contentedly float here for the rest of the day.