The observation of bitter gourd leaf miner population was recorded at weekly interval as per standard meteorological week. The influence of weather factors on population density of leaf miner was analyzed by a simple correlation study and coefficients were worked out. Results indicated that there were marked differences observed in infestation of leaf miner. The population of leaf miners (0.32 ± 0.22) was observed in the 13^th SMW (26^th March - 1^st April). Minimum leaf miner infestation (0.01 ± 0.22) were recorded in 23^rd SMW (5^th - 11^th June), while maximum (0.50 ± 0.22) infestation was recorded during 15^th SMW (9^th - 15^th April) and 16^th SMW (23^rd – 29^th April). The data on correlation between mean population of leaf miner infesting bitter gourd and different weather parameters revealed that all the meteorological parameters viz., maximum temperature, morning relative humidity and evening relative humidity were found to be non-significant with mean population of leaf miner. The minimum temperature was negatively significant with leaf miner population.