WUFI 2D was designed to calculate the behavior of building components exposed to the weather. It is natural to describe the conditions of the surrounding air in terms of meteorological parameters such as temperature, relative humidity, solar radiation and driving rain. Hourly weather data used in the analysis are based on climate conditions in Bangkok weather, using a Typical Meteorological Year (TMY). Data of TMY are averaged from a period of 10 years (1990–1999). Figs. 5–7
and 8 showed typical hourly weather data in Bangkok as temperature, relative humidity, solar radiation and driving rain, respectively.