Rain

I have a thing for rain. I think it's pretty common, and avoid talking about it because I think it's sorta cliché, but nonetheless one of my favourite moods is when it's raining, you're alone, and the sound of the rain seems to fill you up.
I named myself Pluvialis, 'of rain', with the full name Anima Pluvialis, 'Soul of Rain', in my teens.
Morrowind and Wind Waker have good sources of rain mood.