Weather Derivative
A financial contract whose payoff is linked to a measurable weather variable — such as temperature, rainfall, or wind speed — rather than to an asset price, used by businesses whose revenues or costs are materially affected by weather conditions, with no active exchange-traded market in India.
Weather derivatives emerged in the United States in the late 1990s, initially structured for the energy sector. A utility company's gas distribution revenue, for instance, correlates strongly with winter temperature — warmer winters reduce heating demand and revenue. A weather derivative based on heating degree days (a measure of how far average daily temperature falls below 18°C, the threshold for heating demand) allowed the utility to transfer this volumetric weather risk to a counterparty willing to accept it.
The payoff structure typically involves an index — accumulated rainfall in millimetres at a specified weather station over a defined period, or total growing degree days during a crop season — and a strike level. If the index outcome is above the strike (too little rain, for example), the protection seller pays the buyer a pre-agreed amount per unit of index deviation. The instrument is conceptually similar to a cap or floor in interest rate derivatives, adapted for weather variables.
The Indian economy has an enormous latent demand for weather risk transfer. Agriculture accounts for roughly 15% of GDP and employs close to half the workforce; rainfall variability driven by the southwest monsoon is among the most important single determinants of agricultural output, rural income, and ultimately consumer spending and inflation. Power demand, tourism revenues, retail sales of seasonal goods, and insurance loss ratios all display significant weather sensitivity.
Despite this potential, India does not have an active exchange-traded weather derivatives market. The reasons are structural: reliable, long-term historical weather station data with sufficient geographic density is difficult to source; basis risk (the mismatch between the weather at the reference station and the weather at the insured location) is high in a geographically diverse country with microclimatic variation; and the Indian derivatives market regulatory framework was built around financial assets rather than physical indices.
The government's crop insurance scheme (Pradhan Mantri Fasal Bima Yojana) incorporates weather-indexed insurance elements, representing a form of parametric weather risk transfer. Private insurers and microfinance institutions have piloted rainfall-indexed insurance products for smallholder farmers. The World Bank and various development finance institutions have provided technical assistance for weather risk market development.
In international markets, CME Group lists weather futures and options for various cities based on temperature indices. India's potential participation in global weather risk markets — through cross-border OTC derivatives or a domestic exchange-traded market — represents a significant long-term opportunity if data infrastructure and regulatory frameworks develop further.