Tokyo May 2 Low Temp: Will Fourteen Degrees Hit?

Tokyo’s overnight low temperature on May 2 has become one of the more precise forecasting bets on Polymarket right now. The market is asking traders to pick the exact lowest temperature on a single calendar day in a single city. That specificity is what makes this interesting. One degree in either direction ends the contract differently, and the 24-hour momentum says something shifted fast.

The 14°C outcome carries a 39% implied probability as of May 1, 2026. The market leans bearish on this specific outcome, with 61% of capital sitting on the NO side. That gap tells you traders are not convinced Tokyo will land precisely at 14°C when the May 2 minimum is recorded.

How the Fourteen-Degree Contract Works

This contract resolves YES if the official lowest temperature recorded in Tokyo on May 2, 2026 equals exactly 14°C. It resolves NO if the minimum comes in at any other temperature, including 13°C, 15°C, or anything outside that single degree. Resolution follows the market’s designated weather data source for Tokyo observations. The contract closes at 2026-05-02 12:00:00.

• YES (14°C minimum): priced at 0.39, implying a 39% probability.
• NO (any other temperature): priced at 0.61, implying a 61% probability.

For NO to pay out, Tokyo’s minimum temperature on May 2 simply needs to land anywhere other than 14°C. The Japan Meteorological Agency posts daily minimum temperature observations for Tokyo. A reading of 13°C, 15°C, or any other value closes this contract in NO’s favor. The single-degree resolution window is narrow. Most daily minimum forecasts carry uncertainty bands of plus or minus one to two degrees, which means NO holds structural statistical weight here regardless of which direction the temperature moves.

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A Big Twenty-Four-Hour Move on Thin Volume

The momentum composite here is striking. The 24-hour price change of +23.0% combined with a trend score of 53.40 and flat 1-hour movement suggests a sharp repricing event happened in the past day, then stabilized. The most likely driver is updated numerical weather prediction model output for Tokyo on May 2, which would have landed in global forecast cycles on April 30 and May 1.

Total volume stands at $8,343, with $6,664 of that trading in the last 24 hours. Liquidity in the order book sits at $256,168. That liquidity figure is high relative to volume, which means the book is deep but trading is thin. At this volume level, a single mid-sized bet can move the price materially. Here’s what the measurements are telling us: the 39% price is fragile. New forecast data before 2026-05-02 12:00:00 could reprice this contract sharply in either direction.

Key Factors

• The 24-hour price surge of +23.0% aligns with updated forecast model runs for Tokyo on May 2, pointing toward 14°C as a plausible outcome.
• The 1-hour change of +0.0% shows the repricing has paused, suggesting traders are now waiting for confirmation rather than chasing.
• Tokyo’s historical May 2 minimum temperatures cluster between 12°C and 16°C, making 14°C a statistically central outcome without being the modal single-degree prediction.
• Low total volume ($8,343) means this market’s price is susceptible to outsized movement from any single large trade or updated forecast publication.
• The Japan Meteorological Agency’s next Tokyo forecast update will be the primary data point moving this contract before resolution.

Lines Analysis: Tokyo Weather and the Single-Degree Problem

The case for YES rests on numerical weather prediction models converging on a 14°C minimum for Tokyo on May 2. The 23% jump in YES price over 24 hours implies at least some traders saw model output pointing toward that specific degree. Tokyo’s spring overnight lows in early May have historically clustered around 13°C to 15°C, so 14°C sits in a statistically plausible range. The Japan Meteorological Agency’s medium-range forecasts for early May typically show overnight lows in that band as Siberian high-pressure systems weaken.

What makes NO structurally favored is straightforward math. This contract resolves on a single integer degree. Even if 14°C is the most likely single outcome, the combined probability of all other temperatures is always higher. Weather forecast uncertainty at 24 to 48 hours still spans two to three degrees for overnight lows. A cloud band arriving slightly earlier or later, or a wind direction shift, can move the minimum by one degree. The Japan Meteorological Agency’s operational forecasts for Tokyo on May 2 will be the final arbiter, and those forecasts have a track record of one-degree misses at short range.

Signals to Monitor

• Japan Meteorological Agency forecast updates for Tokyo on May 2: any shift in overnight low prediction toward 13°C or 15°C reprices YES lower immediately.
• European Centre for Medium-Range Weather Forecasts ensemble output for Tokyo: if ensemble spread tightens around 14°C, YES probability rises.
• Synoptic pattern over the Kanto Plain on May 1 evening: clear skies and light winds favor radiative cooling toward 13°C or lower; cloud cover and southerly flow push minimum toward 15°C or above.
• Trading volume spikes before resolution: thin liquidity means a single large bet on an alternative outcome can move the price without representing consensus.
• Actual overnight observations from Tokyo stations on the early hours of May 2: any early readings tracking below 13°C or above 15°C will signal which way the minimum is heading.

The market is pricing uncertainty, not science. At $8,343 total volume, this contract reflects a small number of traders making directional bets on forecast models rather than a deep consensus. The data slightly favors 14°C as the single most probable integer outcome, but NO captures all other outcomes combined. The 39% YES price is a reasonable reflection of that math.

LINES VERDICT

Narrow Window, Structurally Favored NO

Tokyo’s May 2 minimum landing on exactly 14°C is plausible, but a single-degree resolution window in a two-to-three-degree uncertainty range means the distribution favors outcomes other than 14°C in aggregate.

What the market says: 39% probability that Tokyo’s minimum on May 2 hits exactly 14°C. The 23% surge in YES price over 24 hours signals fresh forecast model alignment, but thin volume means this price can shift sharply before the 2026-05-02 12:00:00 resolution.

Key unknown: The Japan Meteorological Agency’s next forecast cycle for Tokyo on May 2 is the single data point that will reprice this contract. A one-degree shift in the predicted overnight low in either direction collapses YES probability toward zero.

Scientific Context: Tokyo’s Early May Temperature Baseline

Tokyo’s early May climate record shows overnight lows averaging between 13°C and 15°C, with the Japan Meteorological Agency’s historical station data for the Otemachi observation site covering decades of May observations. The transition from spring to early summer in the Kanto Plain is governed by the retreat of cold continental air masses and the gradual onset of maritime influence from the Pacific. Day-to-day variability in this transition period is high. Single-day minimum temperatures can deviate by two to three degrees from the seasonal average depending on synoptic conditions. That variability is exactly what makes single-degree resolution markets on Tokyo temperatures a pure short-range forecasting bet rather than a climate signal trade.

Frequently Asked Questions

• What does 39% probability mean here? The market implies a roughly two-in-five chance that Tokyo’s official minimum temperature on May 2 records exactly 14°C. It does not mean temperatures will be near 14°C; it means the probability of landing on that precise integer is 39%.
• What pays out if NO wins? NO resolves YES if Tokyo’s minimum on May 2 records any temperature other than 14°C, including 13°C, 15°C, or any value outside that single degree. The Japan Meteorological Agency’s official observation determines the result.
• What data event moves this price most? Japan Meteorological Agency forecast updates for May 2 Tokyo overnight lows are the primary driver. Any model output shifting the predicted minimum by one degree in either direction directly affects YES probability.
• When does this contract resolve? Resolution occurs at 2026-05-02 12:00:00. The contract closes once the official minimum temperature for May 2 is recorded and confirmed against the designated resolution source.
• Is this market reliable given the volume? Total volume of $8,343 is very thin. Liquidity at $256,168 is deep relative to volume, but thin trading means a single trade can move the price significantly without representing broad market consensus.

This analysis reflects market conditions as of 2026-05-01 10:12:39. Prediction market probabilities are volatile and shift as new data and regulatory decisions emerge, especially as the 2026-05-02 12:00:00 resolution date approaches. Lines.com does not accept bets or provide financial or gambling advice. All market outcomes are uncertain.