El Nino alone does not cause heavy rains in Iran Raisi Ardakani, the father of Iran's science of hydrogeology: the occurrence of the El Nino phenomenon does not necessarily mean heavy rains and floods in the country, and accurate forecasting of the rains requires the study of various climate factors. There is a possibility of good rains in November, but we cannot expect heavy rains in all regions of the country. Next year's summer will be hotter and more unusual than this summer.