The study highlights the importance of accurately identifying monsoon onset to avoid false alarms and improve decision-making for farmers, policymakers, and disaster management authorities. By distinguishing between local rainfall events and the arrival of the monsoon system, the method can help optimise sowing schedules, ensure food security, and enhance water resource planning. The research also provides insights into the northward progression of monsoon rainfall, which is critical for regions dependent on timely and sustained monsoon activity.