ISO 15927-1:2003规定了计算和呈现评估建筑物热湿性能某些方面所需气候数据参数的月平均值的程序。任何地点的数值均应从相关国家的气象部门获得。 ISO 15927-1:2003涵盖以下单一气候变量:气温；大气湿度；风速；降水太阳辐射长波辐射。 不包括气象仪器和观测方法；这些是由世界气象组织（WMO）指定的。

ISO 15927-1:2003 specifies procedures for calculating and presenting the monthly means of those parameters of climatic data needed to assess some aspects of the thermal and moisture performance of buildings. Numerical values for any locations should be obtained from the meteorological service in the relevant country. ISO 15927-1:2003 covers the following single climate variables: air temperature; atmospheric humidity; wind speed; precipitation; solar radiation; longwave radiation. Meteorological instrumentation and methods of observation are not covered; these are specified by the World Meteorological Organisation (WMO).