I'm looking for a phrase to describe the kind of water vapour rising from the surface of a river in the morning. It doesn't have to be a single word but I wouldn't be surprised if there is one.
I'd call it mist or fog but, as far as I know, these could refer to something much thicker (particularly fog).
As the sun climbed higher above the horizon, _________ rose from the surface of the river, enveloping the reeds.
Fume also comes to mind but it seems to have negative connotations.