Contrary to what some might think, bees do not always choose perfectly. Sometimes they swarm too late for their own good and don't winter well and starve, and they don't always pick the best location to place their hive. Example, I have seen on several ocassions, hives set up on a side of a house that as summer progressed got increasingly warmer which made the combs melt, detach and fall, creating a mess of things, weakening the hive, inviting waxmoth thus leading to their demise.
Dallas, the two hives pictured have all the resources, most likely, to survive where they are to get them through winter, but they are exposed to the elements and this is why I would construct something over them to shield them, giving them the edge they just might need to weather winter, better. As for as removing them and doing a transfer, It is most likely too late for this as winter is coming very soon and doing this does not give them ample time to rebuild to the point of wintering strength.