I am pretty sure that summer is not over, at least for the south Greece. I am not so sure though about the north part but I have never been there in the fall so I just don't know.
I've never been to Montenegro but from what I've seen in Croatia, I can see the resemblance :)
my brain could not comprehend corn and sunflowers on the right and sea on the left some years ago when we were going to Platamon. But than Platamon has Olympus behind it, so it all was normal 😂