I don't think we will need the parkas or weeklies on this trip. I have been looking a temps in Sapporo and in Guam on my weather app for several months now. Sapporo is cool, cooler than tulsa for sure, except in winter. Looks more like Colorado temps for fall, so might need a fleece jacket there, but then we get progressively warmer as we go south. Guam is always the same in the 80s, so will bring the shorts, water proof sandels, etc for sure. I am going to bring a lot of warm weather clothes and a few things for cooler weather. And my trusty waterproof jacket which goes on every trip with me.