Where surface condensation is evident, humidity level's should be considered. However, each person has his or her own level of personal comfort and the amount of condensation they are willing to accept, to maintain that level. If the occupants insist on a high level of humidity within the house, surface condensation must be expected when outside temperatures are low.
Some indications of high levels of humidty in the house:
See chart as a rough guide for Indoor Humidity levels