The Sudden Weather Shift

It never ceases to amaze me how it can be 33 degrees with humidity in the mid 80's one day, and the next day it can be 21 degrees and no humidity at all. But that is exactly what's happened (again) as Korea makes its shift in to fall. I remember first encountering it in Ulsan way back in 2008 when, one morning, I opened my window and could see my breath the night after being out until 1am in shorts. One of Korea's claims to greatness is having four distinct seasons, which I always though was funny as any country in the northern or southern temperate zones could make a similar claim, but the shift here is way different than the slow shift from summer to winter that I experiences growing up in Vancouver (where September to November would be a very slow shift of a few degrees a week, leaves slowly browning etc.) so I wonder if they are claiming four distinct seasons as opposed to four slowly changing, transitional seasons (if that makes sense). Not that the loss of summer is bad in Korea. Fall is still in the 12-22 range and there will be no more tropical humidity....... at least until next June.