An increase in October precipitation since 1979 over the south Asian region has been observed. This increase is found to be associated with enhanced cross-equatorial flow and strengthened cyclonic circulation over the Indian subcontinent synonymous with a northwest shift in the tropical convergence zone. We show that October lower tropospheric flow is becoming more like September circulation, indicating an increasing delay in the retreat phase of the monsoon system. This extension of the south Asian summer monsoon may be linked to enhanced land-sea contrast.