Do Door Seals Creak More in Winter?

I am suffering 'creaks' at low speed over rough ground,especially if the car flexes (ie one or more wheels in a depression). Although it is notoriously difficult to identify these kind of noises I suspect it may be the seals on one or more doors. Is this more likely to happen in low temperatures? And would some kind of specialised lubricant be likely to help?

I am taking it into the dealers later this week and, as ever, anything I can do to nudge them in the right direction would be helpful.