Cabinets sweating inside in winter

Breathe shallow

The colder the weather, the more you'll have issues with condensation. You probably won't totally get rid of it, but, a few things that help are:

1. Leave a window or roof vent open, just a crack.
2. Use a dehumidifier.
3 Leave cabinet / closet doors open.
4. Move things away from exterior walls to allow air circulation.
5. Reduce coffee making and cooking

I leave the cabinet doors open when the trailer isn't being used.

Having no particular expertise I suspect little or none insulation on the walls where the cabinets are located which would make the cabinets `cold' creating the condensation. Sort of like the condensation on the outside of a glass of a cold drink.
Solution? Keep the doors open? Dehumidifier? pull the cabinets and improve the insulation? Install small lights inside the cabinets like under cabinet lights to warm up the space; actually some sort of heat producing resistor would do the same.
Refer to opening statement about expertise...