This article presents the study on the determination of climatic parameters used in sizing thermal systems. Our work aimed at determining the air temperature, the relative humidity of the air, the insolation period and the global solar radiation of several localities of Burkina Faso. These weather data have been obtained over 30 years from ten (10) synoptic stations. The averages of these parameters have been calculated. From these averages, we have proposed the correlations between climatic parameters and geographical coordinates. We have also determined the geographical coordinates of 162 sites throughout the national territory. From the (04) climatic parameters of 162 sites. A zoning has been proposed for each climatic parameter and for all four (04) weather parameters.

Cooling Degree Days, Insolation, Relative Humidity, Maximal Temperature, correlation, Map, Global Radiation