Condensation is to be avoided. All environmental data are also logged by the projector. Operating outside specified conditions, temperature and condensation, are logged and void warranties.
Long term humidity is, what fungus needs to live. It will build up on many glass surfaces, including these installed within the projector.
Therefore air conditioned spaces as projector rooms are best, and they are not a luxury item. Try to install A/C system in the room with the projector. There still is the port glass, which might also become foggy when outside air is warm and humid, and booth temperature is cold.
I once got a service call, from a client, that the image suddenly turned blurred, and he is requesting immediate warranty repairs.
It turned out to on a rainy day in winter, when patrons arrived in damp coats in the heated room, and the booth space was an unheated, non thermally insulated and directly coupled to the outside air shed.
It was condensation on the outside of the port glass.