Agrometeorology is the study of the influence of the weather and the climate on agriculture. The purpose of this module is an introduction to the terms and parameters used when describing weather and climate. The meteorological parameters such as temperature, humidity, wind, and solar radiation will be defined and discussed and the instruments used at a weather station to measure them described. As meteorological parameters influence each other, the inter-relationship will be described. This concept aims to increase the participants' understanding and knowledge of weather patterns and trends for South Africa and climate conditions for selected provinces. This kind of knowledge shall lead to better understanding of the causes of climate change, provide better understanding of climate variability in order to improve decision making and understanding of agro-ecosystems.