Well he's actually kind of curious about that last one. What can one do with sorcery on a rainy day? Besides, assumingly, flying tricks.
Play with lightning! Sculpt clouds. Make the rain fall upwards ("try this in isolated areas first"). Prevent rain from falling on you personally. Make tiny indoor dioramas of the landscape complete with weather. Fuck around with the wind. Dramatic timing with thunderclaps. Dissolving nearby drops into thick mist.
With that mystery mostly solved (he'll go read up more on it later, probably, but right now he had bigger problems) he needs to go solve the food situation. He doesn't have any of the local currency. He could probably pry an opal out of something and sell it, but that seems like a fantastically bad idea, even with the lack of guards or people here besides lady-weather-mage.
He comes upon the idea of checking if anything in the garden's edible. There's a book for that, right?
Guess he'll have to try the town, then.
He checks on the sleeping woman before he goes. Still asleep despite all efforts to wake her?
Then he goes off to town to maybe see where the heck he is, how he can get home, and if he can't do either how to not die from starvation.
"...Hello?"
"... Hello!" he replies, in the same language (How is he doing that?) "Um. Sorry, ma'am, I'm - I think there was some kind of magical accident, I'm very lost, could you tell me where I am?"
"A magical -? I'm sorry. The local sorceress is - indisposed - but there's another a few days' downriver if you take a barge or just want to walk. How lost are you exactly, do you know what country you're in...?"
"I do not know what country I'm in. I arrived up," he waves towards the palace, "there, maybe an hour or two ago, at the most."
"Oh. You're in Tanree. Sunlit Satrapy. How did you get into her palace?"
"... This is going to sound crazy? There was um. A giant snake, with a mirror for a head. It ate me, and then I was in her palace. Uh, I don't recognize those places, do you know how I could get to Casasha? Or Antaurb?"
"Oh. Well. There's probably a map I could check, I might have lingered in the library a while longer but I sort of felt like I was intruding..."
"She - won't mind if you look at her maps," says the woman, shaking her head, continuing up the stairs. "I'll help you, I may as well."
"Any idea when she'll wake up? I left a note..."
"She made another sorceress angry, and now she's under a curse. There've already been a couple of friendly sorcerers through trying to help, but they haven't been able to undo it."
"I'm sorry. Um. - I'm sorry, I'm missing some terminology, what do you mean by curse exactly?"
"The other sorceress magicked her asleep. I had thought that maybe she'd wake up on her own, after it had been long enough to drain her momentum - but she hasn't."