This paper presents the results of ambient and indoor air temperature measurements in the dwellings of Solar Village-3, Athens. The temperatures were monitored centrally using a Data Acquisition System and the measurements cover a 37 continuous month period, from 1/12/88 to 31/12/91. The main effort in this paper was given to the appropriate elaboration and presentation of indoor air temperature measurements in all buildings of Solar Village-3 for all the evaluation period as well as detailed data for representative dwellings. The elaborated data are average, maximum and minimum daily values for buildings, apartments and rooms, as well as daily variation of half-hourly values. The daily average temperatures of each apartment are weighted average of the daily mean temperatures of each room, which in turn is the mean value of 48 measurements/day (every 30 min). Analysis shows that indoor temperatures measured during the evaluation period contributed to prevail thermal comfort conditions in winter as well in summer days. Analysis also shows that buildings of high thermal capacity and proper insulation have no need for air conditioning.