Weekly percent parasitism of H.armigera by Campoletis chloridae indicated the peak parasitism in the month of February followed in January. Temperatures i.e. maximum, minimum recorded during the peak activity of the parasite (6th-9th weeks) were ranged between 27.5°C-30.4°C and 12.1°C- 15.0°C respectively. While, relative humidity existed during the above weeks was comparatively low and ranged between 82%-92% (RH I) and 37%-93% (RH II) showing great fluctuation in RH II. Rains occurred in 1st, 2nd, 3rd, 5th, 6th, 8th and 9th weeks however, intensity of rainfall was extremely low.