India's First Rainfall Futures Contract Clocks 20,000 Trades in Debut Month Amid Delayed Mumbai Monsoon

Mumbai, July 2: India’s first exchange-traded weather derivatives contract has made a strong debut, with around 20,000 lots changing hands in its first month of trading as a delayed monsoon and below-normal rainfall in Mumbai spurred interest in the new asset class. The contract, RAINMUMBAI, was launched by the National Commodity & Derivatives Exchange (NCDEX) in late May to help businesses and investors hedge against rainfall-related risks.  

The exchange told Moneycontrol the contract has already started serving its intended purpose by providing a forward-looking signal of rainfall expectations, with trading activity picking up around key weather developments. 

Strong debut amid delayed monsoon 

Mumbai’s monsoon arrived later than usual this year, leaving the city with one of its driest starts to the rainy season in years. Although rainfall intensified toward the end of June, the financial capital still finished the month with below-normal precipitation, making deviations from historical rainfall averages an important metric for market participants. 

RAINMUMBAI futures and spot data as on Thursday 09:30 am. Source: NCDEX 

NCDEX told Moneycontrol average daily trading volumes stood at about 1,000 lots during the contract’s first month, while the busiest trading session recorded 2,039 lots on June 15. Trading activity has steadily increased as participants reacted to weather forecasts and rainfall events.  

How the contract works

Unlike traditional commodity futures, RAINMUMBAI does not track the absolute amount of rainfall. Instead, it is linked to the deviation of Mumbai’s actual rainfall from its long-period average (LPA) during the monsoon season.

The contract is cash settled using rainfall data published by the India Meteorological Department (IMD) and is available only for the monsoon months of June, July, August and September. It is designed to help businesses exposed to weather-related disruptions manage financial risks arising from unpredictable rainfall.  

Price discovery gains traction 

Mumbai rainfall as recorded by IMD automatic weather stations. Data as of Thursday, 10:15 am. Source: NCDEX 

According to NCDEX, one of the key achievements of the product so far has been its ability to reflect and even anticipate changing rainfall expectations. 

The exchange noted that futures prices have broadly tracked evolving weather patterns, strengthening confidence in the contract as a tool for price discovery and risk management. It expects participation, liquidity and pricing efficiency to improve further as the monsoon progresses and more users become familiar with the product.  

NCDEX also expects trading volumes to increase around major weather events, with early activity in the July and September contracts suggesting that prices are becoming increasingly forward-looking rather than merely reacting to rainfall data. 

Awareness remains the biggest hurdle 

Despite the encouraging debut, NCDEX told Moneycontrol that educating market participants remains its biggest challenge. 

Many potential users are still developing analytical models that combine meteorological forecasts with trading strategies, while businesses have traditionally relied on insurance or absorbed weather-related losses rather than hedging them through financial markets. The exchange believes greater awareness and wider adoption among sectors such as agriculture, logistics, construction, power and banking will be crucial for the long-term success of weather derivatives in India. 

Source

• NCDEX, https://www.ncdex.com/products/RAINMUMBAI,