What Prediction Markets Are Forecasting

Prediction markets currently give a 68% probability that at least one month in 2026 will be the hottest ever recorded for that calendar month. In simpler terms, traders collectively believe there is roughly a 2 in 3 chance that a new monthly heat record will be set sometime during the year. This shows a significant, though not certain, expectation that the planet's warming trend will continue to break records.

Why the Market Sees It This Way

Two main factors are driving this high probability. First, the long-term trend is clear. According to NASA and NOAA, the last ten years have been the ten warmest on record globally. 2023 was the warmest year ever recorded, and 2024 is on a similar trajectory. This established pattern makes another record-breaking year statistically likely.

Second, climate models and current conditions support this forecast. Scientists note that the climate is now in a sustained period of elevated temperatures, partly influenced by a strong El Niño event that recently peaked. Even as El Niño fades, the underlying warming from greenhouse gas emissions continues to add heat to the system. The baseline temperature for the planet is now higher, making monthly records easier to surpass.

Key Dates and Events to Watch

The key signals will come from monthly temperature reports issued by major agencies like NASA, NOAA, and the European Union's Copernicus Climate Change Service. Watch for their monthly bulletins, typically released in the first two weeks of the following month.

Particular attention should be paid to the late spring and summer months in the Northern Hemisphere (May through August). These months typically see the highest absolute global temperatures each year and are therefore the most likely candidates for setting a new all-time monthly record. A very warm start to 2026 would likely increase market confidence further.

How Reliable Are These Predictions?

Prediction markets have generally been accurate at aggregating expert-like consensus on climate trends, which are driven by well-understood physical processes. However, their near-term accuracy can be affected by unpredictable natural variability, such as a sudden volcanic eruption that could temporarily cool the planet. The 68% probability reflects this known uncertainty; it is a consensus that a record is the most likely outcome, but acknowledges a real chance that natural variability could delay it by another year.