A study was conducted to understand the yield performance of trees grown from polycross seeds of rubber in the North Konkan region of Western India, which has a humid type climate with high temperature and soil moisture deficits in summer as the major constraints for the growth and productivity of the crop. Data on rubber yields collected on each tapping day from two blocks of trees formed the basic data from which monthly, seasonal and annual yields were calculated. Population characteristics like frequency distribution of various yield classes and the yield contributions of of tree groups categorized on the basis of yield levels were worked out. Monthly block yields increased gradually with the onset of monsoon, peaked after the monsoon, sustained up to December and declined thereafter. Contribution of post-monsoon season to total yield was about 52 to 58;while that of monsoon and dry seasons were almost similar with 21 to 24;. Yield level category tallying classified 68;of the trees as low, 20;as medium and 6;as high yielders. Contribution in yield of the trees to the total was 49, 24, 11 and 16;respectively. Mean annual yield of about 800 kg/ha/annum (with a range of 610 to 998 kg) over seven years of tapping was comparable with that in the traditional region. The study indicated that though North Konkan experienced a long rainless period with more than three months of high temperature and drought conditions, rubber cultivation may be viable under judicious agromanagement practices.