A study was conducted on influence of weather parameters on seasonal incidence of major insect pests of brinjal at research farm of Department of Agricultural Entomology, VNMKV, Parbhani during 2018-19. The activity of insect pests was observed throughout the crop growth period. The infestation of Leucinodes orbonalis on developing shoots of brinjal was observed from 32th to 45th SMWs and the peak shoot infestation was 17.9 per cent during 42nd SMW. However, the maximum damage (40.6 per cent) to brinjal fruits due to L. orbonalis was noticed during 42nd SMW. The study indicated that evapotranspiration and bright sunshine hours had positive correlation with population of aphids. However, weather parameters viz., maximum temperature, evapotranspiration and bright sunshine hours were influenced significantly positive on the incidence of jassids, whiteflies, mites as well as shoot and fruit borer.