I don't find Florida to be humid in the winter. That said, I have extremely dry, sensitive skin and it really doesn't get a whole lot better in the summer. Maybe a bit. I have a very simple routine though. Do to sensitivity I can really use many different products and, though I've tried, have yet to find a product that keeps the tightness and flaking at bay.
So my routine is full on vaseline after a shower or facial wash. After about 30 minutes I towel it off. That seems to be the only thing that works for me and I've tried lots. I can only use Dove Sensitive Skin bar to wash also.
This makes it very easy for me to travel.
I subscribe to a subforum on Reddit called HerOneBag which is about trying to travel with only one bag. There are often posts about how to handle of the product regimins most women have. It basically comes down to decanting a lot into very small containers which seems to help with the packing.