Pod Insights Finshots Daily Can you trade rainfall? About this episode In today’s episode on 25th May 2026, we talk about a different kind of futures contract whose underlying asset is rainfall.
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Transcript 0:00 Speaker 00 Hello folks, you're tuned in different shots daily. In today's episode, we talk about a different kind of futures contract whose underlying asset is rainfall.
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0:55 Speaker 00 For most of human history, the weather was treated as an uncontrollable force of nature. A drought could destroy economies, floods could paralyze cities and businesses simply absorb the damage as part of life. An act of God, if you will. But financial markets have a habit of trying to prize every form of uncertainty eventually. Interest rates become tradable, oil futures became tradable and then volatility itself became tradable. Weather followed surprisingly soon after and one of the biggest pioneers of this was Enron. Yes, that Enron. Their logic was simple. If weather could materially affect revenues, then weather uncertainty could also be bought, sold and hedged.
1:37 Speaker 00 Soon traders were creating contracts linked to wind, snowfall and temperature patterns. And now, the National Commodities and Derivatives Exchange, or NCDEX, in India may soon attempt something even stranger. Trading rainfall. For context, the NCDEX is preparing to launch derivative contracts linked to Mumbai's rainfall patterns. In simple terms, businesses and traders may soon be able to hedge against rain the same way they already hedge against oil prices or currencies. A little sidebar here. Is basically a financial contract whose value depends on something else like gold prices, stock prices, currencies or even rainfall. For example, imagine you and your friend make a deal based on gold prices.
2:21 Speaker 00 You say if gold prices go up this month, you pay me a thousand rupees. If they fall, I'll pay you a thousand rupees. So the contract simply depends on what happens to gold prices without you actually buying or selling gold. Now, at first glance, this sounds very bizarre, right? After all, how exactly do you trade rain, right? Now, NCDX has come up with an answer. The proposed derivative contract called Rain Mumbai uses Mumbai's historical LPA, that's Long Period Average Rainfall, or historical average rainfall as its reference point. Based on past weather data, the exchange estimates that a normal monsoon in Mumbai usually brings about 2,206.7 millimeters of rainfall.
3:04 Speaker 00 So now, during the monsoon, actual daily rainfall is compared with the savage. If Mumbai gets more rain than usual, the difference is counted as a positive number. If it gets less rain than usual, the difference turns negative. Now, let's think about why it makes sense. A weak monsoon affects agriculture, excessive rainfall, flood cities and heat waves increase electricity demand. So, in other words, the weather directly affects a company's revenues, people's productivity and even demand across sectors. And in a country like India, where over forty-six percent of the workforce is employed in agriculture, rainfall itself becomes an economic variable worth managing. That is precisely what weather derivatives attempt to do. And the appeal is quite obvious.
3:48 Speaker 00 Over the last thirty years, India has lost around a hundred and eighty billion dollars due to extreme weather. So, a financial hedge offers businesses at least some cushion against these uncertainties. But this is also where the idea starts becoming much more complicated than it initially appears. The first challenge is that rainfall is hyper-local. Even citywide rainfall numbers do not always reflect what people actually experience on the ground. Anyone who has lived in cities like Mumbai or Chennai already understands this intuitively.
4:20 Speaker 00 can be completely submerged underwater while another receives barely enough rainfall to cause inconvenience. And that creates a problem for financial contracts like these. For a derivative to work properly, the underlying variable must closely match the real world risk being hedged. But a company operating across India may not gain much protection from a Mumbai specific rainfall contract. This is known as basis risk or the risk that the payout from the derivative does not perfectly match the actual losses experienced in the real world. Which is why the real underlying asset here is not just rainfall itself, but trust in the measurement system. Because the entire contract only works if participants believe the weather data is objective, standardized and impossible to manipulate. Then comes the second concern, speculation.
5:05 Speaker 00 Because financial markets rarely remain limited to genuine hedgers, the moment a market becomes liquid enough. Traders with no direct exposure to underlying risk begin participating simply to profit from price movements. That means rainfall contracts could eventually attract speculators who are effectively betting on weather outcomes without having any real business exposure to rainfall risk itself. In fact, this concern has existed almost since birth of weather derivatives themselves. However, Enron's later collapse left the market with a lasting stigma. And people began questioning whether trading weather was genuine risk management or simply another sophisticated form of gambling disguised as finance. Now, to be fair, speculation itself is not inherently bad.
5:51 Speaker 00 Most derivatives markets depend on speculators to provide liquidity and make trading easier for genuine hedgers. But the concern is what happens if speculative activity eventually comes to dominate the market itself. At that point, prices may begin reflecting trading sentiment rather than actual hedging demand. And this could slowly transform climate volatility into another casino-style financial market detached from the real economy. To some extent, that concern is valid. Financial markets are extremely efficient at pricing measurable risks, but climate systems are not always easily predictable. Extreme weather events often create cascading second-order effects that are difficult to Model flooding in one city can affect supply chains elsewhere or crop failures can alter food inflation months later.
6:36 Speaker 00 So in other words, climate risk is not always neat enough to fit inside a financial model. And that creates a deeper philosophical tension around products like these, which makes you ask. Should climate risks become a tradable asset class at all? Some would argue that financializing weather risks distracts from solving the underlying problems themselves. After all, a booming market for climate hedges is not necessarily proof of climate resilience, right? Similarly, rainfall derivatives do not prevent floods or improve drainage systems in any way. At best, they redistribute the financial losses after damage has already occurred. And that perhaps captures the deeper limitation of financial solutions to climate problems. They cannot replace real world adaptation.
7:20 Speaker 00 Better drainage systems, flood control infrastructure and climate resilient agriculture still matter far more to ordinary people than financial hedges ever were. Because in reality, folks, the first beneficiaries of products like these will likely be insurers, utilities and large financial institutions with the resources to actively manage climate risk. Meanwhile, farmers, informal workers and vulnerable households may continue to absorb the direct physical consequences of floods, droughts and extreme heat. This creates an uncomfortable tension that financial markets are becoming increasingly sophisticated at pricing climate risk precisely because the physical world itself is becoming more unstable.
8:02 Speaker 00 But then again, that is also how insurance has historically worked and it's not necessarily a bad thing. For instance, life insurance does not prevent death. What it does instead is create a mechanism that allows a family to maintain the same quality of life despite the loss. And perhaps that is exactly what is happening here too. As climate volatility intensifies globally, businesses can no longer treat weather as a background variable. It directly influences revenues, costs, logistics and economic stability itself. Financial markets are therefore doing what they have always done when uncertainty becomes economically meaningful. Attempting to quantify it, price it and mitigate that risk.
8:44 Speaker 00 Which is why the launch of rainfall derivatives in India is not really about trading rain. It signifies that climate change is slowly evolving from just an environmental problem into a financial one. The markets are merely responding to that by building new systems around that reality. Alright folks, I will see you on the next one. Have a great week. Thank you for listening to today's episode. And if you want to share your feedback or suggestions, do drop us an email to [email protected] . Until next time.
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