NCDEX has launched RAINMUMBAI, India's first rainfall-based weather derivatives contract, developed in collaboration with IIT Bombay and the India Meteorological Department (IMD). This innovative financial instrument aims to help stakeholders manage financial risks associated with rainfall fluctuations.
RAINMUMBAI is designed for a diverse range of participants, including farmers, construction companies, power utilities, and banks with agricultural loan portfolios. It offers a scientific tool for managing monsoon uncertainty, complementing traditional mechanisms like government relief and insurance. The contracts are based on Cumulative Deviation Rainfall (CDR), which measures the deviation of actual rainfall from the Long Period Average (LPA) during the monsoon months of June to September.
The framework for RAINMUMBAI is built using daily rainfall data from IMD's network of surface observatories and is benchmarked against a 30-year historical dataset (1991–2020 LPA). This ensures transparency, consistency, and reliability. Unlike traditional insurance products, these weather derivatives are settled purely on observed data, eliminating the need for loss assessment and enabling faster settlement cycles.
“India has lived with monsoon uncertainty for centuries. RAINMUMBAI provides every stakeholder with a regulated, scientific tool to manage this uncertainty.”
Dr. Arun Raste, MD & CEO of NCDEX
Bikram Singh, Head of the Regional Meteorological Centre (RMC) Mumbai, IMD, emphasized the importance of reliable data, stating that IMD's observational infrastructure and long-term datasets provide a strong foundation for building credible and transparent rainfall indices.
The introduction of RAINMUMBAI marks the emergence of a new asset class in India's climate economy, representing a significant step forward in strengthening the country's climate risk management ecosystem.
“Reliable and standardized weather data is critical for the development of such financial instruments.”
Bikram Singh, Head – Regional Meteorological Centre (RMC) Mumbai, IMD
Background
India's economy is heavily reliant on the monsoon, which affects agriculture, power generation, and water supply. Traditional risk management methods, such as government relief and insurance, have limitations. The introduction of weather derivatives like RAINMUMBAI provides a new tool for managing climate-related financial risks.
As the climate economy evolves, stakeholders across weather-sensitive sectors will closely monitor the performance and adoption of RAINMUMBAI. This development could pave the way for more innovative financial instruments tailored to India's unique climate challenges.
