Influence of weather on the yield of black pepper variety Panniyur I was studied by resorting correlation and regression analysis.Among the different weather variables, mean maximum temperature in March first forthinght and June second fortnight, total sunshine hours recceived during February first fortnight, March first fortnight and April second fortnight, total rainfall during March second fortnight nad September second fortnigh, mean maximum relative humidity during March first fortnight and mean minimum relative humidity during March second fortnight and July first fortnight were found to be significantly correlated with the papper yield of succeeding year. By combining three weather variables viz., mean maximum temperature during March first fortnight, mean maximum temperature during June second fortnight and mean minimum relative humidity during July first fortnight, a regression equation was derived with an R value of 0.926 which can be used in predicting the pepper yield at the end of July first fortnight.