In conclusion, this study clearly revealed that the influence of climate variability, appeared as a unique one, on the occurrence of phyllody disease transmitted by vectors and provided an example of the case that impact of climatic variability would not always be negative, specifically when dealing with vector-borne diseases which needs better understanding of the variability effects of alterations of vector–host–pathogen relationships under conditions of sustained climate change. This is an example on how a cool and rainy vegetative growth unmatched with the vector’s cycle to develop phyllody in the regular cropping season.