The present study was carried out on influence of abiotic factors on relative abundance of fruit flies (Diptera: Tephritidae) infesting cucumber during kharif season of 2017 at Central Experimental Station, Wakawali, Dist. Ratnagiri. The study on seasonal incidence of fruit flies infesting cucumber revealed that there were marked differences in infestation of fruit flies. The initiation of fruit flies infestation was started after fruit setting in the last week of July (30th SMW). Minimum per cent fruit flies infestation (35.71 ± 36.91) was recorded in 34th SMW (20-26 August), while maximum (100.00 ± 36.91) per cent infestation was recorded during 30th SMW (23-29 July) and 31st SMW (30 July- 05 August). The data on correlation between fruit flies with different meteorological parameters showed that the various meteorological parameters were found to be non-significant.