Coffee is an economically important commercial crop that is severely harmed by the coffee white stem borer (CWSB), Xylotrechus quadripes (Chevrolat). CWSB has several alternate hosts, arabica coffee was the most preferred hosts in all coffee growing regions. A severe outbreak has recently occurred during 2019 in few robusta estates of Polibetta liaison zone in Kodagu district, Karnataka. Hence, studying the emergence period of CWSB is necessary to understand their infestation in robusta coffee plantations. The monthly mean data was recorded for the CWSB adult emergence from the cages during 2019-2021, where the infested stems were collected and kept inside. The peak emergence was observed in the month of May and during November and December in every year. The average number of beetles emerged per stem ranged from 0.30, 0.38 and 0.38 during 2019-2021 respectively. The total number of beetles (92, 112 and 114) emerged from 300 stems and the sex ratio (1:1.5, 1:1.6 and 1:1.4) were recorded during 2019-2021, respectively. Correlation of CWSB beetle emergence and weather parameters exhibited a significant positive correlation with maximum temperature (0.480, 0.558 and 0.722) and negatively correlated with rainfall (-0.471, -0.525 and -0.485) during 2019-2021 respectively. The multiple regression analysis showed that the weather parameters influence the adult emergence to the extent of 46%, 53% and 76% (R2 values) during the year 2019-2021.